题目内容

He ______ the key, so we ______ into the office.
A．hadn’t left; can’tB．didn’t leave; couldn’t have got
C．hadn’t left; couldn’t getD．hasn’t left; couldn’t get
C
考查时态。句意：他没有留下钥匙，因此我们不能进入办公室。结合语境可知前文描述的是过去已经完成的动作，故用过去完成时态。下文为站在过去时间看不能进行的将来的动作，故用过去将来时态。选C。
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