单项选择题

A．Water can only be used once.
B．Used water can be recycled.
C．Recycled water is unfit for drinking.
D．Only rain-water is drinkable.
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单项选择题
A．He wanted to grab the girl.B．He wanted to frighten the girl.C．He wanted to prove it dangerous to do so.D．He was ordered to do so.
A．He wanted to grab the girl.
B．He wanted to frighten the girl.
C．He wanted to prove it dangerous to do so.
D．He was ordered to do so.
问答题
S7. If you volunteer to work in Santa Claus’ village post office, you will receive ______.
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