单项选择题

A．It’s cheaper.
B．It’s safer.
C．It’s quicker.
D．It’s easier.
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单项选择题
A．Environmental protection.B．Pest control.C．House construction.D．Fire prevention.
A．Environmental protection.
B．Pest control.
C．House construction.
D．Fire prevention.
单项选择题
A．The man was mistaken.B．The woman won’t have to wait for long.C．The woman has done a good job.D．The man doesn’t work hard.
A．The man was mistaken.
B．The woman won’t have to wait for long.
C．The woman has done a good job.
D．The man doesn’t work hard.
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