单项选择题
The boat drill is finished. You are （）(解散).
A.dismissed B.dismiss C.gone D.left
单项选择题 Water is used to put out （）(普通火).
单项选择题 At each drill a different person should be in （）(负责)of an extinguisher.
单项选择题 （）(除了) the fire drill, there are also boat drill and emergency drill on board.
