The world _________. Things never stay the same.

Edison had more than 1,000 inventions his lifetime.[ ]

Would you like me to turn down the radio a bit? –______.I’m used to working with the radio on .

Because of the rain, we must ________ holding the sports meeting.

Boys and girls, we will have a class trip to Taixing Park next week.—Great! It must be ______. I simply can’t wait _____ it.