. _______ different kinds of pianos, the workers farther improved their quality.
#97438
A
To produce 
B
Being produced 
C
Produced
D
Having produced
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She likes _______ but she doesn’t like _______ now, because there are too many people in the pool.
#96404
A
swimming; to swim
B
swim; to swim
C
swimming; swimming
D
to swim; swimming
Tom is the first        he is wrong.
#94243
A
admit
B
to admit
C
of admitting
D
for admitting