---- Is Bob still performing?
---- I'm afraid not. He is said________ the stage already as he has become an official.
| A．to have left | B．to leave | C．to have been left | D．to be left |
We ______ the difficulty together, but why didn’t you tell me?
| A．should face | B．might face |
| C．could have faced | D．must have faced |
I______ thank you too much for all your help to my son while we were away from home.
| A．won’t | B．can’t | C．can | D．will |
If may car _________more reliable, I would have driven to Lhasa instead of flying last summer.
| A．was | B．had been | C．should be | D．would be |
I got close enough to hear them speaking Chinese, and I said “Ni Hao ” just as I ____ do in China.
| A．must | B．might | C．can | D．should |
（2012辽宁卷）One of our rules is that every student wear school uniform while at school.
| A． might | B． could | C． shall | D． will |