It is really useful dictionary and dictionary every one of us needs.A. a aB. a theC. t

问题补充：

It is really useful dictionary and dictionary every one of us needs.

A. a, a

B. a, the

C. the, a

D. the, the

答案：

(答案→)A. a, a

B. a, the

C. the, a

D. the, the

解析：表示泛指用不定冠词。句意：这确实是一本有用的词典，一本我们都需要的词典。