单项选择题 （）可以提高我们的唤醒水平，使我们进入最优的工作表现

The little boy ________ to see his dog running up to him.

Well goes the saying, "Spare the rod, and ________ the child."

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

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

The rainforests ________ southward to the mouth of the river.

His father ________ that he should major in computer science in college.

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

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

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

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