单项选择题

A．Avoid junk food.
B．Attend monthly meetings.
C．Buy cleaning supplies at the co-op.
D．Work at the co-op for an hour every week.
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单项选择题
A．Pessimistic.B．Optimistic.C．Radical.D．Practical.
A．Pessimistic.
B．Optimistic.
C．Radical.
D．Practical.
单项选择题
A．A flood wall was built.B．Rescue teams were formed.C．An alarm system was set up.D．50 underground stations were made waterproof.
A．A flood wall was built.
B．Rescue teams were formed.
C．An alarm system was set up.
D．50 underground stations were made waterproof.
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