题目内容
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
B
【解析】
试题分析:考察介词短语辨析。A依次,轮流;B作为回报;C徒劳;D依次,反过来;句意:她的老师对她帮助很多要注意她给他买了一直漂亮的笔作为回报。根据句意可知B正确。
考点:考察介词短语辨析
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