问题
选择题
My mother was cooking while I_________ the radio.
A.listened to
B.have listened to
C.was listening to
D.am listening to
答案
答案: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。