Generallyspeaking,______accordingtodirections,thedrughasnoside-effect.
A.whentaking
B.whentaken
C.whentotake
D.whentobetaken
正确答案:B[解析]主从句主语应一致,原句应为“…wheniti8takenaccordingto…”这里itis被省略,简化为“whentaken'’分词短语作状语。

Generallyspeaking,______accordingtodirections,thedrughasnoside-effect.
A.whentaking
B.whentaken
C.whentotake
D.whentobetaken
正确答案:B上一篇 A. to B. for C. of D. with
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