People in Yancheng are proud of ________ they have achieved in the past thirty years.
| A．how | B．which |
| C．what | D．when |
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