Washington DC is beautiful city. It is capital of USA.A. a a a B. a the the C. the

问题补充：

Washington DC is beautiful city. It is capital of USA.

A. a, a, a B. a, the, the C. the, the, the D. a, the, /

答案：

解析：在英文中表示事物类别用不定冠词a或an，本题前半句的含义为华盛顿是一个美丽的城市，故用a，表示特别所指或限定用定冠词the，故本题选B。