Unless ___ to speak, you should remain silent at the conference.
| A．invited | B．inviting | C．being invited | D．having invited |
—_____ he start at once or wait for a while?—Let him start at once.
| A．Will | B．Would | C．Does | D．Shall |
A left-luggage office is a place where bags ______ be left for a short time, especially at a railway station.
| A．should | B．can | C．must | D．will |
—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 |
How I wish every family ______ a large house with a beautiful garden!
| A．has | B．had | C．will have | D．had had |
It has been announced that candidates ______ remain in their seats until all the papers have been collected.
| A．can | B．will | C．may | D．shall |