Before traveling in space, you must know what it might feel like_____in an imaginary environment.
#98721
A
to travel
B
traveling
C
to be traveling
D
travel
推荐题目
I can’t stand ________ with Jane in the same office. She just refuses ________ talking while she works.
#95386
A
working ; stopping
B
to work ; stopping
C
work ; stop
D
working ; to stop
You shouldn’t have the machines ______ all the while. You ought to have them ______ now and then.
#97579
A
run; repair
B
running; repairing
C
run; repaired
D
running; repaired
Mary found herself looking forward more and more ________ the coming entrance examination.
#96814
A
to pass
B
to have passed
C
passing
D
to passing