I’M SURE I LOCKED THE DOOR. I CLEARLY REMEMBER _____ IT.A. LOCKING...
23. I’m sure I locked the door. I clearly remember _____ it.
A. locking B. to lock C. to have locked D. to be locked
23. I’m sure I locked the door. I clearly remember _____ it.
A. locking B. to lock C. to have locked D. to be locked