﹣It is reported that cancer can be controlled at a temperature lower than 100℃below zero．﹣Really？______ nice surprise!（ ）
| A． |
How |
B． |
What |
C． |
What a |
D． |
What an |
Don't hurry him．You will just have to be____and wait until he finishes the work．（ ）
| A． |
active |
B． |
careful |
C． |
patient |
D． |
famous |
﹣﹣﹣Look at the stone bridge！Do you know____it was built？
﹣﹣﹣In the 1860s．It is quite old．（ ）
| A． |
when |
B． |
how |
C． |
where |
D． |
why |
Please don't make so much noise．I_____hear the speaker very well．（ ）
| A． |
needn't |
B． |
mustn't |
C． |
can't |
D． |
shouldn't |
Many wild animals are_____，and it's time for us to do whatever we can to protect them．（ ）
| A． |
on duty |
B． |
on show |
C． |
in order |
D． |
in danger |
Mr．Black's memory is getting____．As a result，he often leaves his keys at home．（ ）
| A． |
older |
B． |
poorer |
C． |
greater |
D． |
better |