单项选择题

That ______ the case, we have to make some changes in our plan.

A．is
B．was
C．being
D．has been
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单项选择题
The ______ from the airport was really tiring because it was situated far from the city.
A．flight
B．travel
C．crossing
D．journey
单项选择题
If reading is to accomplish anything more than ______ time, it must be active.
A．wasting
B．spending
C．passing
D．idling
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