[ Preposition ]
We’ve been accustomed ….. studying only half an hour.
A. to
B. with
C. of

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Grammar › ViewThey __________ a new house in the suburbs.
A. have
B. has
C. having
D. had to
Grammar › View
Don’t forget _____ the door when you leave the room.
A. close
B. closed
C. to close
D. closing