Question

【题目】Generally speaking，________ according to the directions，the drug has no side effect.

A．when taking B．when taken

C．when to take D．when to be taken

Answer 1

【答案】B

【解析】考查状语从句中的省略。在状语从句中，当从句主语与主句主语一致，且谓语动词含有be时，将从句的主语和be省略。空处补充完整应是：...，when the drug is taken。