The boy is good learning English and he does well it.A. at atB. at inC. in ;atD. in; i

问题补充：

The boy is good learning English and he does well it.

A. at, at

B. at, in

C. in ;at

D. in; in

答案：

A. at, at

(答案→)B. at, in

C. in ;at

D. in; in

解析：be good at和do well in是固定短语的搭配.