—What do you think Lucy will be five years?—I think she will be a doctor.A. afterB. inC.

问题补充：

—What do you think Lucy will be five years?

—I think she will be a doctor.

A. after

B. in

C. for

D. at

答案：

A. after

(答案→)B. in

C. for

D. at

解析：此题考查短语in+段时间表示多久以后，经常用在将来时中。