Question

— Did you notice ________?

—Yes. He was playing football with his classmates.

A.where Bob has gone B.what Bob was doing

C.who needs a football D.when Bob reached the playground

Answer

B

【解析】

句意：——你注意到鲍勃在做什么了吗? ——是的。他正在和同学们踢足球。

考查宾语从句引导词。根据答语“He was playing football with his classmates.”，可知上一句应问“你注意到鲍勃在做什么了吗?”，根据句意，故选B。