单项填空（共15小题；每小题1分，满分15分）
21. — Excuse me. How much is the shirt?
—________.
A. Extra large B. 50 each C. It sells well D. Altogether there are 5
22. —I want to buy a shirt that is not too big.
—What do you think of _______ over there?
A. such B. this C. it D. that
