题目内容

While the police have already done a lot of investigation, much evidence ___   __.
A.is remaining to be confirmedB.remained to be confirmed
C.is remained to be confirmedD.remains to be confirmed
D
考查时态。句意:虽然警方已经做了大量调查,大量证据依然有待确定。可知remain这个动作从过去到现在,还没有结束,故用一般现在时态,选D。
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