Make sing Sentences

This sounds more natural as a title.

Today, I continue to learning new vocabulary and Ito make some sentences usingfrom them.

I hope you couldhave the time to check themy usage of words in the corresponding context and grammar.

We must think over obvious things in our daily life because *plausible* theories are sometimes totally wrong, ands well as vice versa, *preposterous* ideas are sometimes the truths.

The sentence is kind of strange but you have the right idea.

The number of roosts has decreased for several years because of forest erosion, which means numerous birds and other animals become refugeethe decrease in population of roost-making birds.

Roosts are high up in a tree or other tall object and not on the ground.

(Can '"refugee'" refer to an animal other than personhumans?)

No.

It's a grand surprise that as a freshman I have the opportunity to contribute to the *unprecedented* art festival in my schoolThat achievement is unprecedented.

"Unprecedented" means that it hasn't happened before and almost always describes a very important achievement. It can connote either a positive or negative meaning, e.g., "The President's use of Twitter was unprecedented."

Under fierce competition, students have to study harder to *assure* their priority in admission.

Yes, you used this correctly.

As a teenager in the puberty, I would like to make decisions byon myself own rather than accept the decisions *imposed* upon me by my parents.

You have the correct understanding but I corrected the sentence to more natural use in the US.

She is so gorgeous that I could hardly *conceal* my affectiongawking.

You have the correct understanding but the sentence was kind of strange.

A dangerous idea emerged in his mind andso he decided to *conceal* it from the others.

Yes, this is correct.

Forbidding kids from watching what programs they like *deprives* them of their rights to choose, freedom and even happinesor themselves.

Today, I continue to learning new vocabulary and I make some sentences using ithem.

“Vocabulary” is a collective noun that is grammatically singular (“it” instead of “them”).

I hope you could check the usage of these words in the context, and the grammar.

We must think over obvious things in our daily life / lives because *plausible* theories are sometimes totally wrong / false, and vice versa, *preposterous* ideas are sometimes right / the truths / true.

It would be more natural to contrast “wrong” with “right” or “false” with “true.”

The number of roosts has decreased for several years because of forest erosion, which means numerous birds and other animals have become refugees.

(Can 'refugee' refer to an animal other than a person?)

It sounds OK to me.

It's a grand surprise that as a freshman I have the opportunity to contribute to the *unprecedented*ly large* / first ever art festival in my school.

“Unprecedented” on its own sounds weird as a descriptor for an art festival. You could say “unprecedentedly large” or some other adverb+adjective combination, but if you mean it’s the first art festival ever held at this school, I would say “first ever.”

Under fierce competition, students have to study harder to *assure* their priority in admission.

The grammar is fine, but I’m not sure about the logic: would studying harder really assure their priority in admission? They might study really hard but still not do well on the admission exam, and therefore fail to get into the school, I think. Therefore, it might make more sense to say they need to do well on the entrance exam in order to assure their admission priority.

As a teenager in the puberty, I would like make decisions by myself rather than accept the decisions *imposed* by my parents.

She iwas so gorgeous that I could hardly *conceal* my affection.

Suggestion: She looked so gorgeous to me that I could hardly conceal my affection.

A dangerous idea emerged in his mind and he decided to *conceal* it from others.

suggestion: A dangerous idea formed in his mind, which he decided to conceal from others.

Forbidding kids from watching what programs they like *deprives* them of their rights to choose, their freedom and even their happiness.

Usage: we don’t deprive a right, we deprive a person of that right.

Alternative: …deprives them of their rights of choice, freedom and even happiness.