I DON'T REMEMBER ______ THE FRONT DOOR WHEN I LEFT HOME.A. TO LOCK...

15. - 342 CAU TRAC NGHIEM ON THI TN HOT
342 CAU TRAC NGHIEM ON THI TN HOT
15. I don't remember ______ the front door when I left home.A. to lock B. lock C. locked D. locking