相关考题
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单项选择题
I have some questions about the （）equipment.
A.safety
B.safe
C.saving
D.save -
单项选择题
The fire is out of（） .
A.controlled
B.controller
C.control
D.controllable -
单项选择题
The air is （）. Don’t enter that area.
A.fresh
B.toxic
C.poison
