France is __________ European country.
– Have you decided how to spend your next day off? – Not yet. We ________ join the school volunteer project. A. may B. should C. must
– What do you think of Lucy’s birthday party? – ________. I hope I can have such a party too. A. Wonderful B. Terrible C. Boring
This is Mr White’s ________ trip to Beijing. He has been there twice before. A. first B. second C. third
– ________ do you hang out with your friends? – About once a week. A. How soon B. How often C. How long
We will have no water to drink _________ we don’t protect the earth. A. until B. if C. unless