________himnottodoso，hewouldn’thavemadesuchaseriousmist...

問題詳情：

________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

知識點：倒裝與省略

題型：選擇題