---Look at boy over there. Do you know him?---Yes. He is from Shanghai . A. aB. theC. anD.

问题补充：

---Look at boy over there. Do you know him?

---Yes. He is from Shanghai .

A. a

B. the

C. an

D. /

答案：

A. a

(答案→)B. the

C. an

D. /

解析：根据地点状语over there.可知此处特指那边的男孩，故用定冠词。