— Do you believe there are aliens?— I’m afraid not. I don’t think aliens in space.A. can f

问题补充：

— Do you believe there are aliens?

— I’m afraid not. I don’t think aliens in space.

A. can find

B. can found

C. can be found

D. can be founded

答案：

A. can find

B. can found

(答案→)C. can be found

D. can be founded

解析：本题考察的是特殊疑问句，其结构为主语+be done，，故选符合题意，故选答案为C