2019年mpacc考试英语真题——名词169

{01}I tried to persuade him to give up the foolish idea, but in ________, and now he begins to regret.

A.vain

B.turn

C.return

D.case

解析：in vain意为“徒劳地”；in turn意为“依次，轮流”；in return意为“作为回报”；in case意为“万一，以防”。根据句意“我原来极力劝他放弃那个愚蠢的想法，他不听，现在他却开始后悔了”可知，答案为A。
本题选A。
{02}No matter what you do，you should put your _________into it.

A.mind

B.hours

C.brain

D.thought

解析：put one’s heart into sth.意思为“专心做某事。”
本题选B。