题目内容
Since the 12th century, the glacier there has lowered by as much as 90cm, ________ sea level to rise.
- A.causing
- B.having caused
- C.caused
- D.being caused
A
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My colleague has been recovering gradually since the operation, and it wont’ be long ______ he comes back to work.
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A.before |
B.since |
C.after |
D.when |