Question

【题目】Tom was talking with his parents ______Jill was watching a TV programme.

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

Answer 1

【答案】B

【解析】

试题分析：句意：当吉尔正在看电视节目时，汤姆和他的父母正在交谈。A. after在……之后；B. while当……的时候；C. until直到；D. before在……之前。只有while与进行时态连用。故答案为B。