单项选择题

By the end of next week, we ______ thirty kilometers.

A．have traveled
B．had traveled
C．had been traveling
D．shall have been traveling
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单项选择题
In no way ______ the amount of heat.
A．the temperature equals
B．does the temperature equal
C．the temperature equal
D．does the temperature equals
单项选择题
Television is another major instrument of communication, ______ us to see as well as to hear the performer.
A．permitted
B．permitting
C．to permit
D．have permitted
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