27.How long do you think it will be________China becomes a rich and harmonious country?
| A．before | B．after | C．since | D．When |
This is the only one of these books that ______worth reading.
| A．has | B．have | C．is | D．are |
The man ______ talked to you just now is my father.
| A．who | B．he | C．which | D．whose |
They thought too much about ______.
| A．which I had said | B．what I had said |
| C．that I had said | D．I had said |
Did you find the notebook ______ Jim had given me for my birthday?
| A．who | B． whom | C．which | D．whose |
That’s all ______ I have seen and heard.
| A．which | B．that | C．where | D．what |