Unless ________ to answer questions, the pupils won't talk in Mrs Smith's class.
#88754
A
asking
B
asked
C
being asked
D
having asked
推荐题目
We suggested ___ trees at the weekend.
#97802
A
planted
B
plant
C
to plant
D
planting
Many a student ____ going to have themselves ____ in the hospital.
#93024
A
is ; to examine
B
are ; examine
C
is ; examined
D
are ; examining
 Long ago, man used to ______ with his hands but now man is used to ______ with machines, and sometimes a robot is used to ___ instead of people.
#93755
A
work, working, work
B
work, working, working
C
working, work, working
D
working, work, work
 Though I have often heard this song _______. I have never heard you _______ it.
#98432
A
being sung, sang
B
sang, singing
C
sung, sing
D
to be sung, to sing