I think there will be more tall buildings 10 years. A. after B.at C. in

问题补充：

I think there will be more tall buildings 10 years.

A. after B.at C. in

答案：

解析：根据there will be，表示一般将来时，故用答案为in +一段时间，表示将来时的，故选答案为C