选择填空：This maths problem is too difficult for us _____.
选择填空：This maths problem is too difficult for us _____.
A.work it out
B.to work it out
C.to work out it
D.to work out
A.work it out
B.to work it out
C.to work out it
D.to work out
赞 yangdingding 幼苗
共回答了14个问题采纳率：85.7% 举报
选D to work out
主语this problem在意义上是work out 的宾语,因此后面的it就没必要带了
主语this problem在意义上是work out 的宾语,因此后面的it就没必要带了
1年前
6
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