______ until the lights have turned to green.
#66190
A
Wait
B
To wait
C
Waiting
D
Having waited
推荐题目
The floor is so dirty .Would you please ?
#59450
A
to mop up it
B
mop up it
C
to mop it up
D
mop it up
great progress it has made since Hong Kong returned to China in 1997.
#65921
A
Which
B
What
C
How
D
Whether
Most museums are just for looking. But today some of them have things for you to touch. The signs say, "________!"
#66313
A
Be touching
B
To touch
C
Do touch
D
No touch