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IF THERE ... GRAVITY, WATER WOULDN'T RUN DOWN HILL...
IF THERE ... GRAVITY, WATER WOULDN'T RUN DOWN HILL.A. PLENTY OF B...
30 BAI TRAC NGHIEM VOI KEYS FOR 9 P
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49. If there ... gravity, water wouldn't run down hill.
A. plenty of B. plenty C. lots D. very much
A. aren't B. isn't C. wasn't D. weren't
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30 BAI TRAC NGHIEM VOI KEYS FOR 9 P