21. —Do you know Ann Watterson very well?
—Yes, she used to be ______ coach and in ______ charge of our school team.
A. a; the B. the; the C. a; 不填 D.不填; 不填
22. You were ________ to take your shoes off when you entered the school club, but you didn’t.
A. invited B. supposed C. selected D. approved
23. Hearing the boring news, I was too distracted to my attention on my homework.
A. attract B. draw C. concentrate D. pay
