根据句意选用and, but, or, so, while, for填空。
1. The ground is wet, _________ it rained last night.
2. It's a fine day today, _________ everyone is busy.
3. This is our first lesson, _________ I don't know all your names.
4. Take an umbrella with you, _________ you'll get wet.
5. Do you understand what I said _________ do you want me to explain it again?
6. We have classes in the morning, _________ we don't have classes in the afternoon.
7. She is a doctor _________ I am a teacher.
8. Use your head, _________ you'll find a way.
9. They went to the zoo yesterday, _________ they didn't see any animals.
10. I must go now, _________ it's getting dark.
11. Be careful, _________ you will fall off the tree.
12.—Excuse me. Do you have a table for two?
—I'm sorry, _________ there aren't any seats now. Would you mind waiting for a while?
13. Never give up, _________ you'll make it.
14. She was very thirsty, _________ she drank some water from the river.
15. You must work hard, _________ you'll fall behind.
16. The dress was very expensive, _________ I didn't buy it.
17. My uncle doesn't have much money,_________ he always enjoys himself.
18.—Would you like to come to dinner tonight?
—I'd like to, _________ I'm busy.
19. Get up early tomorrow, _________ you won't get there before seven.
参考答案: 1. for 2. and/but/while 3. so 4. or 5. or 6. but 7. while/and/but 8. and 9. but 10. for 11. or 12. but 13. and 14. so 15. or 16. so 17. but 18. but 19. or
