Now that the sign reads, “No person ______ smoke here”, please choose a seat in the smoking area over there if you _______ smoke.
| A．must; shall | B．will; must | C．shall; must | D．can; should |
——The research on the new bird flu virus vaccine is challenging and demanding. Who do you think can do the job?
——____ Tom have a try?
| A．Shall | B．Can | C．Will | D．Need |
--- I promise her daughter ______ get a nice present on her birthday.
---Will it be a big surprise to her?
| A．should | B．must | C．would | D．shall |
They were determined to carry out the plan at first, but then we ________ persuade them to change their minds.
| A．would | B．could | C．were able to | D．had to |
—Thank you very much for giving me a hand when I was in trouble.
—Don’t mention it. I only did what anyone else in my place.
| A．must do | B．might do | C．would have done | D．can have done |
Mary ______ my letter; otherwise she would have replied before now.
| A．has received |
| B．ought to have received |
| C．couldn’t have received |
| D．shouldn’t have received |
The boy be very naughty, but he is very lovely.
| A．might | B．can | C．may | D．need |
He _____ be really difficult at times even though he ,generally speaking, is a nice person.
| A．can | B．should | C．shall | D．must |
—Guess what! I have got A for my term paper.
—Great! You ______ read widely and put a lot of work into it.
| A．must | B．should | C．must have | D．should have |
----- Mary looks very upset. She _______ failed to pass the exam.
----- I guess so. It's very difficult after all.
A must have B could have C should have D might have
It has been announced that students _______ remain in their seats until all the papers have been collected.
| A．can | B．may | C．will | D．shall |
--- Hi, Tom. Any idea where Jane is?
--- She _________ in the classroom. I saw her there just now.
| A．shall be | B．should have been | C．must be | D．might have been |
Liza _ ___ well not want to go on the trip---she hates traveling.
| A．will | B．can | C． must | D． may |
I’m sorry, Bill. I _________ the book to you last week, but I was so busy that I forgot to do so.
| A．must have returned | B．could return | C．should have returned | D．might return |
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