It took a long time for the effective use of natural gas ______.
#93382
A
making
B
being made
C
to make
D
to be made
推荐题目
. Please remain __________ until the plane has come to a complete stop.
#98531
A
to seat
B
to be seated
C
seating
D
seated
It is clear that your ____ English will greatly improve if you can practice ____ wherever you can.
#95991
A
speaking; speaking
B
speaking; spoken
C
spoken; speaking
D
spoken; spoken
"We can't go out to play football in this rainy weather," said Bob, ________ out of the window disappointed.
#94473
A
look
B
to look
C
looked
D
looking
The witnesses ________ by the police just now gave very different descriptions of the fight. (2013·陕西，14)
#88741
A
questioned
B
being questioned
C
to be questioned
D
having questioned