All of us are busy going over our lessons, as the Mid-term exam is _________.
It is required that students _____mobile phones at school, so seldom _____them using one.
——Tom is never late for work. Why is he absent today?—— Something _____to him.
—— Could you tell me his telephone number?—— _____the phone book and find it out yourself.
Don’t all stand up together! ________, please.
______from space, the earth, with water _____seventy percent of its surface looks like a blue ball.