问题补充:
The Wilsons live in A-shaped house near the coast . It is 17th century cottage.
A. the, /
B. an, the
C. /, the
D. an ,a
答案:
A. the, /
B. an, the
C. /, the
(答案→)D. an ,a
解析:第一个空填an 表泛指类别。“一个A字型的小屋里”根据句意第二个句子应是对上文an shaped house 起同位语的用,进一步解释说明,所以还用a表泛指类别。