— ____ is it for the dance lesson?— It’s 100 yuan.
— Is that Jack speaking?—Sorry, he isn’t here. He ________the cinema with his aunt.
Don’t put your hand out of the car window, ______ you will be hurt by the passing traffic.
---Must I work out the problem right now?---Yes, you _______. It’s very serious.
We’re glad to see that Beijing is developing _______ these years than ever before.
---What time does the library open?--- ______ eight o’clock.