Our teacher is always busy preparing lessons
until 11 o’clock at night, _______we students have gone to sleep.
| A．that time | B．by which time | C．by that time | D．which time |
The manager suggested an earlier date ____________ the meeting.
| A．on | B．for | C．about | D．with |
Keep on practicing. You will play the piano _____, if not better than, Lang Lang.
| A．so good | B．so well | C．so well as | D．as well as |
_____and out of breath, we reached the top of the mountain and stopped _____ the beautiful scenery.
| A．Tiring; to admire | B．Being tired; admiring |
| C．Tired; to admire | D．Tired; admiring |
So that all the living things are dying out gradually .
| A．serious polluted the lake is | B．serious polluted is the lake |
| C．seriously polluted the lake is | D．seriously polluted is the lake |
As is known to all, Yang Liwei has become a space hero iswe have expected．
| A．that; which | B．what; that | C．what; which | D．that; what |