对于有毒、有腐蚀性的消耗品，在使用过程中施工人员需

The boy was the only one that （         ）the car accident; both his parents went killed.

The soldiers refused to （         ）; they had vowed to fight to the last minute.

The young official is assigned to （         ）the construction of the new gym.

The manager adopted the plan I （         ）yesterday because it was practicable.

His father （         ）that he should major in computer science in college.

The rainforests （         ）southward to the mouth of the river.

The country has been （         ）the border defense in preparation for war.

Mom was annoyed, for I didn＇t （         ）my ties before going out.

Well goes the saying, "Spare the rod, and （         ）the child."

The little boy （         ）to see his dog running up to him.