.--- Where is your father?
--- I'm not sure. He_______ in the office.
A.must beB.maybeC.may beD.perhaps
C

試題分析:句意:---你父親在哪里?---我不確定。他可能在辦公室。must be一定是,表示對(duì)現(xiàn)在事實(shí)的推測(cè);maybe副詞,可能,大概,也許;may be可能是,表示對(duì)現(xiàn)在的可能性推測(cè);perhaps副詞,可能,大概,也許。因?yàn)榭蘸鬅o(wú)任何系動(dòng)詞或?qū)嵙x動(dòng)詞,故需填情態(tài)動(dòng)詞+be結(jié)構(gòu),有因?yàn)轭}干中有I'm not sure表示不確定的成分,故選C。
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