Generallyspeaking,

問題詳情：

 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

【回答】

解析：選B。考查狀語從句的省略。when taken是when the drug is taken的省略。

知識點：狀語從句

題型：選擇題