Before a problem can be solved, it must be obvious _____ the problem itself is. [ ]

He often has sports. ________ football, basketball and ping-pong.

Dad. Could I have an MP5 like this —Certainly. We can buy ______ one, but asgood as this one.

The headmaster told the boy________the angry teacher，but he refused to.[ ]

She told me that she would not go with us if it ____ the next day