单项选择题
The machines are made () at full speed.
A．work
B．working
C．to work
D．to be worked
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单项选择题
Mr White, along with his assistants, () on the project day and night to meet the deadline.
A．work
B．working
C．is working
D．are working
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单项选择题
As we have known from the map of the woad, this is ______.
A．twice as large an island as that
B．twice as larger as that island
C．as twice as that one
D．twice as a large island as that
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