He was just about to give up hope，________a good idea came into his mind.
| A．when |
| B．while |
| C．as |
| D．since |
— He hasn’t finished the work yet.
— Well, he _____.
| A．ought | B．ought to |
| C．ought to have | D．ought to have finished |
He had promised me to come to the party, and _____.
| A．so did he | B．so he did | C．so he would | D．so would he |
The country life he was used to _____ greatly since the opening policy.
| A．change | B．has changed | C．changing | D．having changed |
He went there, _____ some books and call on an old friend of his.
| A．bought | B．buying | C．buy | D．to buy |
It is the first time that you have come to China, _____?
| A．haven’t you | B．isn’t it | C．hasn’t it | D．aren’t you |