单项选择题

Outside my office window there is a fire ______ on the right.

A．escape
B．ladder
C．steps
D．stairs
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单项选择题
The dean of our department is supposed ______ for Florence the day before yesterday.
A．to leave
B．to have left
C．to be leaving
D．to have been left
单项选择题
A state with more ______ instruments in its hands will find that with small men no great thing can really be accomplished。
A．tractable
B．mild
C．docile
D．controllable
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