单项选择题

Today, housework has been made much easier by electrical ______.

A．facilities
B．appliances
C．instruments
D．equipment
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单项选择题
The hotel under this building has ______ for only forty people; it is far from enough of us.
A．basement
B．lodging
C．board
D．accommodation
单项选择题
As ______ clear from his manners, he is a teacher.
A．being
B．is
C．to be
D．been
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