笔试部分（100分）
I. 选择填空。（15分）
( )21. ––Has your brother ever been to the Sand Lake?
––Yes, he has _______ the Sand Lake many times.
A. been to B. gone to C. go to D. went
( )22. Because of Project Hope (希望工程), _______ children have better lives.
A. thousand B. thousand of C. thousands of D. two thousands
