ILast night was excellent last night!!

The six of us went drinking yesterday, and we all are senior ofs in university.

You could also delete the first clause since it repeats what you said in the first sentence.

So iIt's a busy time for job hunting, but four out of six of us, including me, are not hunting for a job.

It's because I and one of us go totwo of us (including me) will study abroad after we graduate, one of us wants to be a singer, and one of us is still looksing for what he really wants to do.

While tThe rest got aalready have job offers.

So we passionately talked about our future and our dreams.

"Future" can be singular or plural in this sentence. Using the singular focuses on the aspects of the future which you share. Using the plural focuses on the aspects which are unique to each individual.

The six of us went drinking yesterday, and we all are senior ofs at university.

Or "final-year university students."

So it's a busy time for job hunting, but four out of sixthe six of us, including me, are not hunting for a job.

It's because I and one of us go tmy friends and I will go study abroad after we graduate, one of usanother wants to be a singer, and one of uthe fourth is looksing for what he really wants to do.

The phrase is always "so-and-so and I."

W, while the rest got a job offers.

This is a fragment and should be combined with the last part.

So we passionately talked about the future and our dreams.

It was excellent last night!!

This sounds incomplete without a complement to "excellent," as in "it was excellent seeing them last night," but it will be understood and is in line with what some native speakers would say.

The six of us went out drinking yesterday, and we all are senior ofs in university.

So it's a busy time for job hunting, but four out of sixthe six of us, including me, are not huntlooking for a job.

You can say hunting for a job, but it sounds a little bit odd.

It's because I and one of us go ta friend and I will (or: want to) go study abroad after we graduate, one of us wants to be a singer, and one of us wants to looks for what he really wants to do.

While the rest got a job offers.

So we passionately talked about our futures and dreams.

The six of us went drinking yesterday, and we all are senior ofs at university.

So iIt's a busy time for job hunting, but four out of the six, including me, are not hunting for a job.

IThat's because I and one of usone friend and I will go to study abroad after we graduate, one of us wants to be a singer, and one of us is still looksing for what he really wants to do.

While the rest gothave a job offers.

So we passionately talked about our futures and dreams.