---So you've left the classroom key inside again?---No.I've got it with me this time,but I

发布时间：2020-08-16 08:29:45


---So you've left the classroom key inside again?
---No.I've got it with me this time,but I have forgotten      the door?
A. locking
B. locked
C. to lock
D. to have locked

网友回答

A. locking
B. locked
(答案→)C. to lock
D. to have locked
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