He can ________ dance, because his leg was badly hurt.
A. no more B. no longer
C. not more D. not longer
The number of the students in our school ________ in the last few years.
A. has fallen B. had fallen
C. fell D. has fell
His work really ________ in the factory.
A. makes a different B. makes difference
C. makes different D. makes a difference
I think simple things like bike ________ can help to keep healthy.
A. ride B. riding
C. to ride D. rode
Not only ________ dance well, but he sings very well.
A. he does B. does he
C. does D. he
We should stop ________ trees at will (随意)．
A. cutting off B. cutting down
C. cutting down on D. cutting up
