－Guess what? I saw John reading in the library just now．

－It _________ be him．He is such a lazy boy who hates books．

mustn't

shouldn't

can't

may not

－What do you plan to do after the concert?

－Since the concert _________ at 10∶00p. m., we will just go home after that．

finishes

finished

will finish

has finished

－Do you allow your son to go to any Internet café on holidays?

－_________ not!

Extremely

Thoroughly

Absolutely

Completely

－Would you do me a favor of posting the letter?

－_________．

It's a pleasure．

No trouble．

You've got a point there．

With pleasure

－If our parents would listen more to us, they would understand us better．

－_________．They just expect us to listen．

I believe not

No problem

Good idea

I can't agree more

－Show me your permit, please．

－Oh, it's not in my pocket．It _________．

might fall out

could fall out

should have fallen out

must have fallen out

－Where is Tom? I have something important to tell him．

－I last saw him _________ in the library reading．

sit

seated

seating

sat

－Do you allow your son to go to any Internet café on holidays?

－________ not!

Extremely

Thoroughly

Absolutely

Completely

－Jimmy had a lot of parties recently．

－Yes, that might ________ why he didn’t do well on that test．

sum up

push for

account for

make sense of

－________ the woman with the baby come over? We have a seat here．

－Thank you, sir．Actually I do have my seat here．But my baby likes to look out of the window．

Would

Shall

Must

May