单项选择题

We must ______ on water during the dry season.

A．economical
B．economize
C．economy
D．economically
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单项选择题
Swedish is the ______ language of most Swedes.
A．natural
B．native
C．home
D．mother
单项选择题
This cloth ______very thin.
A．feels
B．touches
C．holds
D．handles
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