When he was a boy, he used to go there and watch _____.
| A．to repair bicycles | B．bicycles to be repaired |
| C．bicycles being repaired | D．repairing bicycles |
Failure can make a positive contribution to your life______you leam to use it．
| A．since | B．unless | C．until | D．once |
The police have issued a detailed______of the missing boy．
| A．direction | B．expression | C．description | D．instruction |
－Did you receive my letter?
－I received one just as I______
| A．set out | B．had set out |
| C．was setting out | D．would set out |
The quick rise in the price of food will make people______,that is，offect people's living standard．
| A．disturbed | B．fascinated | C．distinguished | D．interrupted |
－I can't get on well with some of my classmates． They just leave me in the cold．
－______But what's the reason?
| A．Sorry to hear that | B．Forget it |
| C．Don't mention it | D．Never give up |