．If you send the best wishes to your wife on her birthday will give her a great surprise．

问题补充：

．If you send the best wishes to your wife on her birthday, will give her a great surprise．

A. which I think

B. I think which

C. I think that

D. what I think

答案：

A. which I think

B. I think which

(答案→)C. I think that

D. what I think

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