Ⅰ.单项填空（每小题1.5分，满分15分）
21.________ he is ill, ________he goes to school.
A. Although; but B. /; / C. Although; / D. But; although
22. They watch TV________.
A. one a week B. once a week C. one the w eek D. once week
23. The old man is well because he often_______.
A. exercises B. drinks C. sleeps D. play
24.—________do you read English books?
—Twice a day.
A. How many B. How much C. How long D. How often
25. Lily usually starts the day ________breakfast.
A. with B. from C. at D. of
