The art club is for members only. You can’t go in ____ you are a member.
--- Jenny, ________do you visit your grandparents?--- Twice a month.
---Do your two children live in Beijing with you?--- _______. One is in Shanghai, the other is in Tianjin.
— 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.