Jack ______ so much work that he couldn’t really finish it in time..
A. took on
B. look on
C. rely on
D. depend on
Like most married couples we’ve had our _______ ,but life is always like that.
A. determination
B. sense
C. ups and downs
D. remarks
The terrible polllution has done great harm to the _______.
A. concern
B. environment
C. career
D. decision
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