He can _____well.
A. swim B. swims C. swimming
Be careful ____your things when you are on the train.
A. to B. with C. in
____ do you like apples ?
Because they are delicious .
A. Why B. What C. How
Tom is 
good _____sports
A. in B. at C. on
This middle school has six ____students.
A. hundreds B. hundred C. hundreds of
______bike is that under the tree?
A. Who’s B. What C. Whose
