—Do you know where David is? I can’t find him anywhere.
—Well . He          have gone far— his coat’s still here.
A．shouldn’tB．mustn’t C．can’t D．wouldn’t
C
情態(tài)動詞用法辨析。Shouldn’t have done本不應該做某事實際上卻做了；can’t have done不可能做了某事；wouldn’t have done不會做某事。句意：他不可能走遠，因為他的外套還在這里。
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