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HE WAS TOO BUSY ... HIS HOMEWORK A. TO DO B. DOING...
HE WAS TOO BUSY ... HIS HOMEWORK A. TO DO B. DOING C. FOR DOING D....
KIEM TRA 15 LAN 1
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6. He was too busy ... his homework
A. to do
B. doing
C. for doing
D. does
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6.
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KIEM TRA 15 LAN 1