If I had remembered ____ the door,the things would not have been stolen.

If I had remembered ____ the door,the things would not have been stolen.

题目
If I had remembered ____ the door,the things would not have been stolen.
A) to lock B) locking
  C) to have locked D)shavings locked
为什么不选C
答案
remember to do 就可以了,没有必要完成时,前面已经是had done是对过去的虚拟了,
意思是我要是记得去锁门就好了,东西也就不会被偷了
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