After a knock at the door, the child heard his mother’s voice him.
A. calling B. called C. being called D. to call
Alan is a careful driver，but he drives ______ of my friends.
A. more carefully B. the most careful
C. less carefully D. the least carefully
Leaves are found on all kinds of trees, but they differ greatly size and shape.
A．on B．from C．by D．in
The parents suggested ___ in the hotel room but their kids were anxious to camp out during the trip.
A. sleep B. to sleep C. sleeping D. having slept
Start out right away, _____ you’ll miss the first train.
A. and B. but C. or D. while
He _____ football regularly for many years when he was young.
A. was playing B. played C. has played D. had played
