In North America, most students go to school _____ the school bus.
Mom, I got the best grade on the English test today.—Good job, son. I’m ______of you.
My father’s office is at the top.I can see the whole city _____ the office.[ ]
_____did the space flight last? —Twenty-one hours.[ ]
How far is it from our school to the bookshop?— _____. [ ]