It is said that the number of doctors invited to the meeting _____100, but a number of them _____ absent for different reasons.
| A．is; were | B．is; was | C．are; were | D．are; was |
The young man insisted that he______ these watches and______free.
| A．stole, set | B．had stolen, be set | C．steal, be set | D．had stolen； must be set |
—Would you have told him the answer had it been possible?
—I would have, but I ______so busy then.
| A．had been | B．were | C．was | D．would be |
— It is rather cold here. Shall we light a fire?
— No, we______because things are easy to catch fire.
| A．won’t | B．can’t | C．mustn’t | D．needn’t |
Even though I’d hurt my leg, I______swim back to the river bank.
| A．could | B．might | C．had to | D．was able to |
—Do you think he will do me a favor?
— As far as I know, he is the last one to help others. He______be prepared to give you a hand, though.
| A．might | B．must | C．can | D．should |