Question

【题目】Tom is watching TV, ________ his father is busy working in the study.

A. after B. while C. before D. so

Answer 1

【答案】B

【解析】试题分析：句意：Tom正在看电视，他的爸爸在书房里忙着工作。表示两个动作同时进行时，用while。故选B。