题目内容
【题目】Don’ t worry. A number of efforts are being made ______ the whole system operating normally.
A. being kept B. kept
C. keeping D. to keep
【答案】D
【解析】考查非谓语动词。句意：不要担心。为了保持整个系统正常运转，我们正在进行一些努力。此处是动词不定式做目的状语，故答案为D。
练习册系列答案
相关题目
题目内容
【题目】Don’ t worry. A number of efforts are being made ______ the whole system operating normally.
A. being kept B. kept
C. keeping D. to keep
【答案】D
【解析】考查非谓语动词。句意：不要担心。为了保持整个系统正常运转，我们正在进行一些努力。此处是动词不定式做目的状语，故答案为D。