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Now there are already robots _________ in factories.
#50464
A
working
B
to work
C
work
D
worked
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Do you enjoy ________ books?
#50698
A
seeing
B
reading
C
to see
D
to read
Don’t worry. Our teacher will come to show us ______the computer.
#49193
A
how can we use
B
what to use
C
how to use
D
what can we use
My best friend is good at ________.
#51400
A
sing
B
sings
C
singing
D
sang
It’s important             exercise every morning.
#50836
A
to take
B
taking
C
takes
D
to taking
My shoes are worn out．They  need_______．
#48610
A
to repair
B
be repaired
C
repaired
D
Repairing