第二部分：单项填空（每小题1分，满分15分）
21 Would you do me a favor by carrying it upstairs? -_______.
A. Yes, that’s right B No trouble C Never mind D With pleasure
22 The Wilsons live in _____ A-shaped house near the coast. It is _____ 17th century cottage.
A. the; 不填 B. an; the C. 不填；the D. an; a
