So far we have done a lot to build a low-carbon economy, but it is __________ ideal. We have to work still harder.
| A．next to | B．far from | C．out of | D．due to |
Jack described his father，who ________ a brave boy many years ago，as a strong－willed man.
| A．would be | B．would have been |
| C．must be | D．must have been |
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 |
He did not regret saying what he did but felt that he ________ it differently.
| A．could express | B．would express |
| C．could have expressed | D．must have expressed |
We ________ have bought so much food now that Suzie won't be with us for dinner.(2012·江西)
| A．may not | B．needn't | C．can't | D．mustn't |
—Happy birthday!
—Thank you！It's the best present I ________ for.(2012·江苏)
| A．should have wished | B．must have wished |
| C．may have wished | D．could have wished |