单项选择题

Since the introduction of the new technique,the production cost______greatly．

A．reduces
B．is reduced
C．is reducing
D．has been redused
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单项选择题
Encourage children to______some of their pocket money to buy Spring Festivalpresents．
A．set out
B．take off
C．put aside
D．give in
单项选择题
The flower needs______．
A．to water
B．watered
C．watering
D．being watered
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