單項(xiàng)選擇題

Take （）of hydrants, fire hoses and nozzles.

A.careful
B.care
C.careless
D.carefully

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單項(xiàng)選擇題

Water can put out common fires, such as （）.

A.wood，paper
B.textile
C.A+B
D.oil

單項(xiàng)選擇題

For the duties （）in one emergency, one person may do more than one job and one job may be done by more than one person.

A.assigning
B.assign
C.toassign
D.assigned