A boy in second grade of boy gave me a cute small flower bouquet. A boy in second grade gave me a cute small flower bouquet.

A second grade of boy gave me a cute small flower bouquet. A second grade boy gave me a cute small flower bouquet.

A second grade of boy gave me a cute small flower bouquet. A second grade boy gave me a cute small flower bouquet.

or "A boy from second grade"

A sSecond grade ofyear High school boy gave me a cute small flower bouquet. A Second year High school boy gave me a cute small flower bouquet.

"Second Grade" は小学校の学生感じ。

A second grade ofophomore boy gave me a cute small flower bouquet. A sophomore boy gave me a cute small flower bouquet.

The "second grade" usually refers to primary school, while "sophomore" refers to the second grade of any school. Where I'm from, though, if it's the second grade of high school, then we much more commonly say "ninth grade." It depends on the school system of the area.

A second grade of boy gave me a cute small and cute flower bouquet. A second grade boy gave me a small and cute flower bouquet.

New school from today New school today

In Japanese, it's normal to say 今日から/"from today", but in English I think it's more natural to say "today" (without "from"/から) or "starting today."

New school fromstarting today New school starting today

more natural

New school fromstarting today New school starting today

New sSchool fFrom tToday On. New School From Today On.

New school starting (from) today New school starting (from) today

"from" is optional

Finally, it startIt's finally the first day of April. It's finally the first day of April.

Finally, it startIt's finally the first day of April. It's finally the first day of April.

"The first day of April has finally arrived." is another way you could say this.

Finally, it startwas the first day of April. Finally, it was the first day of April.

Finally, it startthe first day of April. has arrived. Finally, the first day of April has arrived.

Finally, it startthe first day of April has started. Finally, the first day of April has started.

I'm transferring to a new school from today. I'm transferring to a new school today.

I transfer to a new school from today. I transfer to a new school today.

OR Starting today, I'm transferring to a new school.

I transferred to a new school from today. I transferred to a new school today.

I transfer to a new school from today on. I transfer to a new school from today on.

From today on is a short form of "From today onward" which basically means 今日から

I transfer to a new school from today. I transfer to a new school today.

I have transferred to a new school starting from today. I have transferred to a new school starting from today.

Now I haveI still missed the rest of my class my former students a little. I still miss my former students a little.

Now I haveI still missed the rest of my class studentstudents of my former class a little. I still miss the students of my former class a little.

Now I haveI still missed the rest of my classformer students a little. I still miss the rest of my former students a little.

Now I have still missed the rest of my class students a little.feel almost nostalgic for the friends I've made along the way at my soon to be previous school. Now I feel almost nostalgic for the friends I've made along the way at my soon to be previous school.

Now, I have still missed the rest of my class studentmates a little. Now, I still miss the rest of my classmates a little.

Now, I have still missed the rest of my class's students a little. Now, I still missed the rest of my class's students a little.

Someone gave me a rose for bubble bath,I also got rose bath powder, a handkerchief, canned cookies, a water bottle, etc. I also got rose bath powder, a handkerchief, canned cookies, a water bottle, etc.

SomeoneOthers gave me a roses for a bubble bath, a handkerchief, canned cookies, and a water bottle, etc. Others gave me a roses for a bubble bath, a handkerchief, canned cookies, and a water bottle, etc.

Someone gave me a rose for bubble baths, handkerchief, canned cookies, water bottle etc. Someone gave me a rose for bubble baths, handkerchief, canned cookies, water bottle etc.

Someonand then someone else gave me a rose for bubble bath, handkerchief, canned cookies, water bottle , among other cute presentsetc. and then someone else gave me a rose for bubble bath, handkerchief, canned cookies, water bottle, among other cute presentsetc.

Someone gave me a rose petals for a bubble bath, a handkerchief, canned cookies, a water bottle etc. Someone gave me rose petals for a bubble bath, a handkerchief, canned cookies, a water bottle etc.

It's a bit bittersweet to leave my present school. It's a bit bittersweet to leave my present school.

It's a bit bittersweet to leave my present school. It's a bit bittersweet to leave my present school.

It's a bit bittersweet to leave presentthis school. It's a bit bittersweet to leave this school.

It's a bit bittersweet, having to leave presentthis school. It's a bit bittersweet, having to leave this school.

It's a bit bittersweet to leave my present school. It's a bit bittersweet to leave my present school.

It's a bit bittersweet to leave my present school. It's a bit bittersweet to leave my present school.

But I should change my mindmove on. But I should move on.

move on（気持ちを切り替えて）前に進む move on は「前に進む」というニュアンスの英語表現です。

But I should change my mind.attitude. But I should change my attitude.

fits a little better with what you're trying to express

But I should change my mind.look on the bright side But I should look on the bright side

The sentence is grammatically correct but a bit unnatural

But I shouldcan't change my mind. But I can't change my mind.

But I should change my mindset. But I should change my mindset.

New shoolThe students at my new school are waiting for me. The students at my new school are waiting for me.

New shool studentsThe students at my new school are waiting me. The students at my new school are waiting me.

New shool students are waiting me. New students are waiting me.

New shool studentskids at a new school are waiting me.! New kids at a new school are waiting me!

New shool studentclassmates are waiting me. New classmates are waiting me.