摘要： --- of Guilin has your uncle covered since he came here? --- About half of it, I guess. A. How far B. How much C. How wide D. How many (B)
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_____finish their task ahead of time, the students worked harder and harder
- A.In order to
- B.So as to
- C.As to
- D.In order not to
Scientist are not sure about the ___________ of water on the Mars
- A.occupation
- B.existence
- C.demand
- D.treasure