They gave us so warm a welcome that we were moved very much．It was a sight__________ we__________．
| A．what;have never forgotten | B．which; wre never forgotten |
| C．as ;will never forget | D．that; would never forget |
The temperature in spring here can drop __________ below zero.
| A．by | B．from | C．with | D．to |
The meeting __________ three hours last night, which made us very tired.
| A．covered | B．had | C．lasted | D．referred |
If you are worried that the tickets will be sold out, you can buy one __________.
| A．in time | B．in advance | C．on time | D．from time to time |
—Shallwe go to the art exhibition right away?
—__________.
| A．It's your opinion |
| B．I don't mind |
| C．It's all up to you |
| D．That's your decision |
—What was the party like?
—Wonderful. It's years __________ I enjoyed myself so much.
| A．after | B．when | C．before | D．since |