---This boy wants to be actor in the future.A. aB. anC. theD. /

问题补充：

---This boy wants to be actor in the future.

A. a

B. an

C. the

D. /

答案：

A. a

(答案→)B. an

C. the

D. /

解析：本题考查冠词的用法。actor是一个元音音素开头的名词，所以其前要用不定冠词an。