Whenever you have questions in class, first you should _____ your hand , then _____and ask with the permission of the teacher.
I don’t think he is the right person ________ .
It is generally considered unwise to give a child________he or she wants.
He is the only one of the students who________a winner for three years.
—Jack, you erase the blackboard today,______? —But I erased it yesterday.
The police finally found the robber ______near a river_______