He ___ away before we arrived, since the house was deserted．
A．shall have goneB．should have gone
C．could have goneD．must have gone
D
考查情態(tài)動(dòng)詞。must have done對(duì)過去時(shí)間里可能發(fā)生的時(shí)間的推測(cè)，表“肯定”，故選D。
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