While watching television, ____. A.the d
题型:选择题
问题:
While watching television, ____.
A.the doorbell rang
B.we heard the doorbell ring
C.there was someone knocking at the door
D.the doorbell was ringing
While watching television, ____.
A.the doorbell rang
B.we heard the doorbell ring
C.there was someone knocking at the door
D.the doorbell was ringing