--- You didn’t lock the back door. --- You are wrong. I .A.have locked itB.lock
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--- You didn’t lock the back door.
--- You are wrong. I ______.
A.have locked it
B.lock it myself
C.did lock it
D.do lock it
试题答案
C
did +动词原形表示对过去动作的强调。 “你没锁后门”“你错了,我确实锁了” 选C