The shepherd had to round up the sheep ________first night fell.
| A．until | B．before | C．after | D．till |
16．.—Mr Smith, may I ask for a few days off? I am worn out.
--____. We are too busy.
| A．Don’t mention | B．Forget it | C．Don’t worry | D．That’s right |
15． After retiring, he was recommended to ____ gardening as a hobby.
| A．take up | B．take on | C．take off | D．take away |
14． --I tried many times, but I still failed in the experiment.
--Don’t be discouraged． ____ and the problem will be settled．
| A．Making a little effort | B．There being a little effort |
| C．If you make a bit effort | D．A bit more effort |
13． --Hi, Lydia． Are you going to the concert on Friday?
- -I’d like to. But there are so many problems ____.
| A．remaining to be settled | B．remained settling |
| C．remaining to settle | D．remained to be settled |
12． So little ____ about science that the lecture was ____ my understanding.
| A．I know; over | B．knew I; beyond |
| C．did I know; beyond | D．did I know; over |