A．buy B．cost C．sell D．consume
A. buy
B. cost
C. sell
D. consume
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Air pollution can be as harmful to one\\\\\\\'s health___________
A. on the downwind side
B. during rush hours
C. in spring and autumn
D. to toxic air
E. between autumn and winter
F. as exposure to nuclear radiation
Parents in the United States tend to ask their children
A. to save food for tomorrow.
B. to wash the dishes.
C. mottos eat too much.
D. not to waste food.
A．departs B．leaves C．moves D．takes
A. departs
B. leaves
C. moves
D. takes
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