Kids won’t go to school. They will study home computers.A. in inB. at onC. at byD. at;

问题补充：

Kids won’t go to school. They will study home computers.

A. in, in

B. at, on

C. at, by

D. at; from

答案：

A. in, in

(答案→)B. at, on

C. at, by

D. at; from

解析：句意：孩子们不去上学，他们将在家里通过电脑学习。在家，常用介词at；通过电脑，常用介词on，所以选B。