-Why not talk with your parents about your willingness to attend Peking Universi
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—Why not talk with your parents about yourwillingness to attend Peking University Summer Camp?
—I tried __________to get them to listen tome.
| A．in time | B．in vain | C．in need | D．in case |
试题答案
【答案】
B
【解析】本题考查介词短语。句意：--为什么不告诉你的父母关于你想参加北京大学夏令营的事？----我试着说服让他们听我的，但没用。in vain白费地；徒劳无益地；无效果的；无用的。