While watching television, _______.
#98457
A
the doorbell rang
B
the doorbell rings
C
we heard the doorbell ring
D
we heard the doorbell rings
推荐题目
If we can convince young people _____, they might then urge their parents and other people ____ smoking, too.
#88243
A
not starting; to give up
B
not to start; give up
C
not to start; must give up
D
not starting; should give up
I was ashamed _________ lied to my mother.
#93538
A
to be
B
of having
C
that
D
of being
 ---Do you feel like ____ out? ---No. I’d rather we _______ a taxi.
#95414
A
to drive; take
B
to drive; took
C
driving; take
D
driving; took
To succeed in a scientific experiment _____ .  
#98179
A
carefulness is need
B
carefulness is one needs
C
one needs to be careful
D
one need being careful