____ help the people in the snowstorm in the south made him worried. [

题型：同步题难度：来源：

____ help the people in the snowstorm in the south   made him worried.     [     ]
A. Not known how to
B. Unknown what to do to
C. His knowing not how to
D. His not knowing how to

答案

举一反三

— My watch has been losing time for the past week.
— It probably needs ______.   [     ]
A. clean
B. cleaned
C. to clean
D. cleaning

题型：安徽省期中题难度：| 查看答案

Social attention should be paid ______ our earth from ______. [     ]
A. to preventing; being polluted
B. to prevent; polluting
C. to prevent; being polluted
D. to preventing; polluted

题型：河北省期中题难度：| 查看答案

My boss is expecting your reply. I would appreciate ______ back this afternoon. [     ]
A. you to call
B. you call
C. you are calling
D. your calling

题型：浙江省期中题难度：| 查看答案

Was it ______ the international conference that made the city the focus of this area?  [     ]
A. held
B. hold
C. holding
D. being held

题型：北京模拟题难度：| 查看答案

I stayed up late doing my homework yesterday, so I had trouble _____ up early this morning.[ ]
A. get
B. getting
C. got
D. to get

题型：上海模拟题难度：| 查看答案