________himnottodoso，hewouldn’thavemadesuchaseriousmist...

问题详情：

________him not to do so，he wouldn’t have made such a serious mistake.

A．Did I persuade   B．If I persuade    C．If I should persuade   D．Had I persuaded

【回答】

D

知识点：倒装与省略

题型：选择题