Must we hand in the exercise book now?

No, you______, you can hand in it tomorrow.

A、mustn’t B、needn’t

C、can’t D、shouldn’t

( Da Wei comes across Li Lei, who is studying, in the school library. )
A: Hi, Li Lei. Are you busy with your homework now?
B: Oh, yeah, Da Wei. And you?
A: I'm here for a book. Hey, Li Lei. Have a break! We should be outside in the fresh air. It's good for us.
B: Sorry, I can't.    1     I must hand it. in tomorrow.
A: Oh, I see. But we can't always stay indoors.  We must often take exercise.    2  
B: Never.  I hardly have time now.  A sea of homework almost takes up all my free time.  It's sad but that's life.   3   
A: You mean my life? In fact, I'm also very busy like you. But you know I like sports.    4     When ever I have a little time, I will try them.
B: No wonder you are so energetic.
A: Yeah, better health, better grades.     5   
B: Yes, you are right.  It sounds as if should also try to exercise often in the future.  Da Wei, shall we play basketball for a while now?
A: OK. Let's go!

( Da Wei comes across Li Lei, who is studying, in the school library. )

A: Hi, Li Lei. Are you busy with your homework now?

B: Oh, yeah, Da Wei. And you?

A: I'm here for a book. Hey, Li Lei. Have a break! We should be outside in the fresh air. It's good for us.

B: Sorry, I can't.    66      I must hand it. in tomorrow.

A: Oh, I see. But we can't always stay indoors.  We must often take exercise.    67  

B: Never.  I hardly have time now.  A sea of homework almost takes up all my free time.  It's sad but that's life.    68   

A: You mean my life? In fact, I'm also very busy like you. But you know I like sports.    69      When ever I have a little time, I will try them.

B: No wonder you are so energetic.

A: Yeah, better health, better grades.     70   

B: Yes, you are right.  It sounds as if should also try to exercise often in the future.  Da Wei, shall we play basketball for a while now?

A: OK. Let's go!

     A. How about your life?

     B. I like jumping, running, playing basketball and so on.

     C. Why not walk in the fresh air?

     D. How often do you exercise?

     E.. Do you agree with me?

     F. I have to finish my homework first.

     G. Sounds like great fun!