题干

— It's clever _____ you to help me work out this difficult maths problem. Thanks.

— You are welcome. Now it's easier _____ you to understand it.

A:of; of

B:of; for

C:for; of

D:for; for

上一题 下一题 0.0难度 选择题 更新时间:2019-07-25 02:41:37

答案(点此获取答案解析)

B