My English teacher has rich experience in teaching and we all think she is experienced te

问题补充：

My English teacher has rich experience in teaching and we all think she is experienced teacher.

A. 不填; an

B. a; an

C. 不填; the

D. a;the

答案：

(答案→)A. 不填; an

B. a; an

C. 不填; the

D. a;the

解析：考查冠词和experience用法。本题第一空后面的experience是不可数名词经验；第二空后的名词teacher是一个可数名词，用a修饰。句意：我的英语老师在英语教学方面经验丰富。我们都认为他是一个有经验的老师。根据句意说明A正确。