Her teacher helped her so much that she bought him a beautiful pen _________.A．b_刷题宝

题干

Her teacher helped her so much that she bought him a beautiful pen _________.

A．by turns	B．in return
C．in vain	D．in turn

上一题下一题 0.64难度单项选择更新时间:2014-12-15 04:42:57

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