The Wilsons live in A-shaped house near the coast. It is 17th century cottage. A. the; 不

问题补充：

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

答案：

A. the; 不填

B. an; the

C. 不填; the

(答案→)D. an; a

解析：根据house，cottage两个空都必须填冠词，从而排除A、C；第二空后的17th century只表示房子的年代特征，而不表示具体的顺序，故选D。