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Don’t throw away the waste paper. It needs           so that it can be reused.
#49285
A
to destroy
B
destroying
C
to collect
D
collecting
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推荐题目
 It will be difficult for a robot       the same as humans.
#48768
A
do
B
to do
C
doing
D
does
When you leave, please turn off the light_____ energy.
#48503
A
save
B
saving
C
saved
D
to save
________ they good at _______   goals?
#50301
A
Is ,score
B
Are, score
C
Are ,scoreing
D
Are,scoring
---Pleas       your room because  it’s  dirty.----OK,  I will.
#49566
A
tidying
B
tidy up
C
untidy
D
clear off
Doctors tell people _________ their hands often and to stay home if they feel ill.
#50765
A
to wash
B
washes
C
wash
D
washing