.Miss Yang is ill. is why I have come here to give lesson.A. ItB. ThatC. ThereD. This

问题补充：

.Miss Yang is ill. is why I have come here to give lesson.

A. It

B. That

C. There

D. This

答案：

A. It

(答案→)B. That

C. There

D. This

解析：指示代词that/those指前面讲到过的人。