Of the two brothers Bill is younger one and he is quiet boy one that most adults lik

问题补充：

Of the two brothers, Bill is younger one, and he is quiet boy, one that most adults like very much.

A. the; a

B. a ; the

C. a; one

D. the ; the

答案：

(答案→)A. the; a

B. a ; the

C. a; one

D. the ; the

解析：考查冠词和one的用法，句子意思“两个兄弟中，比尔是最小的一个，他是一个安静的男孩，大部分大人都非常喜欢他”，两者中较…的，用定冠词the表示特指，不定冠词a/an表示泛指，a quiet boy一个安静的男孩，所以选A。