I am busy preparing for the mid-term examination, so I can’t help____ housework.
#97598
A
doing
B
to do
C
being done
D
with doing
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Don’t forget to examine the test paper you have just finished_____the possible mistakes in it .
#96084
A
correcting
B
to correct
C
and corrected
D
having correcting
The operation I had   just two months ago and now I have fully recovered.
#92537
A
taken place
B
took place
C
to take place
D
taking place