I.单项选择 从A、B、C三个选项中，选择最佳答案。（每小题1分，计15分）
( ) 21. The girl had to stop playing tennis ______her illness.
A.instead of B.because C. because of
( ) 22. —I’m going to Shanghai with my father for our holiday this month.
—________.
A. Have a good trip! B. Best wishes to you! C. Please go!
