It is considered that the cat got ill by eating the ________ pet food.
A. polluting
B. contaminated
C. worse
D. tainting
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He didn’t ___________ until at the end of the party.
A. turn down
B. turn off
C. turn up
D. turn out
We need to be more ________ in promoting ourselves abroad.
A. energy
B. power
C. empower
D. energetic
He lived in London for 3 months , during ____ time he learned some English.
A. this
B. which
C. that
D. same
On the wall hung a picture, _____ color is blue.
A. whose
B. of which
C. which
D. its
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