While watching television,____. 
#92243
A
the doorbell rang
B
the doorbell rings
C
we heard the doorbell ring
D
we heard the doorbell rings
推荐题目
 A ship loaded with expensive goods was reported ________ into the sea with its oil ________ .
#96524
A
to sink ; given out
B
to have sunk ; run out
C
having sunk ; used up
D
to have sunk ; run out of
It can never be denied that        with a big family results in his quitting school.
#92612
A
having burdened
B
being burdened
C
to burden
D
burdening
As the film star began to appear,the children watched, ________.
#90832
A
fascinating
B
fascinated
C
being fascinated
D
having fascinated