—Shall I lock the lab now before I go home?
—______.I’ll check it myself later.
| A．Go ahead | B．No problem |
| C．No hurry | D．Don’t bother |
The book I borrowed from the library isn’t here. Who __________?
| A．could have taken it | B．must have taken it |
| C．might take it | D．should take it. |
“______ you go so soon?” “ No, I ______ go yet.”
A Must; mustn’t B. Shall; won’t C. Can; may not D. Must; needn’t
Let’s sing a song, ______ we?
| A．will | B．can’t | C．shall | D．do |
The boss say to the secretary, “ If you work well, you _____ have a rise.”
| A．shall | B．would | C．must | D．ought |
“ ______ I take the magazine out of the reading room?” “ Sorry, you _____.”
A. May; mustn’tB. Must; can’t
C. will; didn’t have to C. Can; aren’t able to