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We should wear special boots __________ us floating away into the space .
#48510
A
to prevent
B
preventing
C
prevent
D
prevented
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The old man is too tired _________ go any further.
#50596
A
enough
B
can’t
C
to
D
so
You should give up _______basketball.
#50245
A
playing the
B
to play
C
playing
D
to play the
-What should T do, doctor? -_______ healthy, you should take more exercise.
#48762
A
Keep
B
To keep
C
Keeping
D
Kept
Why not ______ help when you were in danger?
#49467
A
you ask for
B
ask for
C
asking for
D
to ask for
－Who likes watching news? －Greg does. He hopes      about everything now.
#48679
A
know
B
knowing
C
to know
D
know