Question

My mother was looking while I         the radio.

A．listened to	B．have listened
C．was listening to	D．is listening to

Answer 1

C

while连词，表示对比译为“然而”，其前后时态保持一致。 句意：妈妈看东西然而我在听收音机。While前用的是过去进行时态故后面也要一致故选C