Student A: Hi. What's up?

Student B: Oh, not much. I'm going to class right now. What's up with you?

Student A: Mmm ... I'm busy. I have a lot of homework and twenty vocabulary words to learn. ... Well, don't be late. Bye.

Student B: Bye. See you later.

 

Notes:

What's up? = informal (with friends) = Hi + How are you? + What are you doing?

homework = noncount noun; we cannot say homeworks

Correct:

I have a lot of homework.

I have a lot of homework assignments.

Student A: Hi. What's up?

Student B: Oh, not much. I'm going to class right now. What's up with you?

Student A: Mmm ... I'm busy. I have a lot of homework and twenty vocabulary words to learn. ... Well, don't be late. Bye.

Student B: Bye. See you later.

 

Notes:

What's up? = informal (with friends) = Hi + How are you? + What are you doing?

homework = noncount noun; we cannot say homeworks

Correct:

I have a lot of homework.

I have a lot of homework assignments.