Either you or I _____going to the teachers' office after class.
______ in his book, he didn’t notice me when I entered the room.
The door is low, so ______ your head when you go in.
—Why is he feeling disappointed today?—Because the suggestion he has been turned down.
What a mess!Tom,I have told you over and over again not to leave everything .
It shows that a knowledge of first aid can make a real .