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
_____ their hats into the air, the fans of the winning team let out loud shouts of victory.
A. To throw B. Thrown C. Throwing D. Being thrown
If Newton lived today, he ______ surprise by what ____ in science and technology.
A. would be, has been discovered B. will be, had been discovered
C. would be, has discovered D. will be, has been discovered
