One learns a language by making mistakes and _______ them. 
#97851
A
correct
B
correcting
C
corrects
D
to correct
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_____ in time for Christmas,all these gifts must be mailed immediately 
#92599
A
So as to be received
B
In order to receive
C
So as to be receiving
D
In order to be received
The play           next month aims mainly to reflect the local culture.
#88550
A
produced
B
being produced
C
to be produced
D
having been produced