______ him to do like this, he wouldn’t have made such a serious mistake in his
writing.
A．Did you persuadeB．Had you persuaded
C．If you should persuadeD．If you persuade
B
考查虛擬語氣及倒裝。此題表示的是與過去事實相反的虛擬語氣，結(jié)構(gòu)為if +主語+had done,主語+would/could/might have done 結(jié)構(gòu)，省略if，had 前提，故選B。句意：如果你說服了他這樣做的話，他就不會犯如此嚴(yán)重的錯誤了。
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