问题描述:
You can hardly imagine the efforts I have made _____ the goal.
A.to achieve
B.having achieved
C.achieving
D.to have achieved
为什么不选D呢?
_____ with some problem,the researchers failed to complete their project on time.
A.Faced C.Facing
为什么不选C表主动?
A.to achieve
B.having achieved
C.achieving
D.to have achieved
为什么不选D呢?
_____ with some problem,the researchers failed to complete their project on time.
A.Faced C.Facing
为什么不选C表主动?
问题解答:
我来补答展开全文阅读