单项选择题

You can't afford to let the situation get worse. You must take ______ to put it right.

A．decisions
B．directions
C．sides
D．steps
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单项选择题
To keep with the new developments in this field he ______ to a number of journals concerned with it.
A．subscribed
B．prescribed
C．subsidized
D．substituted
单项选择题
A ______ to this problem is expected to be found before long.
A．result
B．response
C．settlement
D．solution
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