问题
选择题
Mary gave Jack so much help that he gave her some roses ______ for her kindness.
A．in turn
B．by turns
C．in answer
D．in return
答案
答案：D
四个选项分别表示 依次、轮流、回答和作为回报，根据题意选D，玛丽给了杰克这么多帮助，因此作为回报他给了她一些玫瑰花。
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