Question

My mother was cooking while I_________ the radio.

A．listened to

B．have listened to

C．was listening to

D．am listening to

Answer 1

C

在英文中while引导时间状语从句，通常用进行时态，本题的主句为过去进行时，故while从句也应该用过去进行时，结构为was或were+doing，故本题选C。