Question

--- Do you know what Millie and Andy were doing at 8 o’clock yesterday?

--- As Millie_____ TV, Andy _____ the door to welcome Tom.

A. was watching: was opening B. watched; opened

C. was watching; opened D. watched: was opening

 

Answer 1

C

【解析】

试题分析：句意:-你知道昨天8点的时候Millie和Andy在做什么吗？-Millie看电视的时候，Andy去开门欢迎Tom。根据这个情景可知，这里表示的是过去一个时间，即昨天8点时正在发生的事情，as 引导的是一个时间状语从句，所以第一空应该用过去进行时；第二个空的open是一个瞬间性动词，故用一般过去时态。故选C。

考点：考查动词时态。