Mum my teacher Mr Wang.A. he isB. it isC. that isD. this is

问题补充：

Mum, my teacher, Mr Wang.

A. he is

B. it is

C. that is

D. this is

答案：

A. he is

B. it is

C. that is

(答案→)D. this is

解析：考查固定结构。介绍某人，用this is+sb结构，所以选D。