---Are you ________ tomorrow?Would you like to go to see a movie with me?

---Sorry, I’m ________．I have many things ________．

1. A.
   free; busy; doing
2. B.
   free; busy; to do
3. C.
   busy; free; doing
4. D.
   busy; free; to do

A: Hi, David. Would you like to go to the movie with me tonight?

B:     71      But I have to go over my lessons.

A: What a pity!      72    

B: Yes, we are having our mid-term exam.

A:     73    

B: I hope so! But I’m a little afraid.

A: Afraid?      74     

B: But I haven’t studied history for a week.

A: Why?

B: Because my history teacher is ill in hospital.

A:      75      Does she get better now?

B: Yes, she will come back to school tomorrow.

A: Sounds great. See you!

B: See you!