1. I closed the window ……………….. it was cold
A. and B. so C. because D. but
2. We have a lot of time. ………………., we will finish our project on time
A. As B. However C. So D. Therefore
3. The kids didn’t study,………………… they failed the test.
A. although B. however C. because D. so
4. ….…………………it rained heavily, we still went camping.
A. because B. although C. so D. but
5. Be quick! Take a taxi, …………………….. you’ll be late.
A. because B. but C. or D. so 4
6. It was a windy and rainy night…………………, I still decided to go out.
A. As B. However C. So D. Therefore
7. Peter wasn’t thirsty………………….. he drank five glasses of water.
A. as B. but C. or D. so
8. I enjoy playing badminton, volleyball ………………..table tennis.
A. and B. or C. but D. so
9. Phong tried his best last semester, …………………. he was not happy with his result. A.therefore B. moreover C. but D. and
10. She knew that it was dangerous;……………………..,she didn’t walk home by herself.
A.However B. Since C. But D. Therefore
11. I am sure she will do well if she ………………….to the University.
 A. will go B. went C. go D. goes
12. If I don’t find a job, I………………………..my studies.
A. will continue B. continue C. continued D. would continue
13. If we go on wasting water, there……………..a shortage of fresh water in a few decades.
A. was B. would be C. will be D. were
14. If you ………………….the lesson well, I will explain it again to you.
A. don’t understand B. understand C. didn’t understand D. understood
15. If Mrs Loan writes a shopping list, she…………………what to buy
. A. forgets B. forgot C. won’t forget D. forgot

16. Lan:………………………………. Nga: That's a good idea.
A.Why are you late for school? B. How are you today? C. How do we go to school? D. How about going somewhere for a drink?
17. Tuan: How about making posters on energy saving and hanging them around our school? You: ___________________
A. Oh, thank you. B. Yes, I’d love to. C. Yes, please. D. Good idea.
18.Peter: Let me congratulate you on your nomination, Amy. Amy: _____________________________________- .
A. That’s a good idea B. It’s nice of you to say so C. Well done D. Yes, I think so
19.- “Why don’t we celebrate Mother’s Day by going out to dinner?” - “ ____________________”
A.That’s right, I am. B. You are welcome. C. That’s a good idea. D. Thanks. 
20Tom: “What a nice blouse you are wearing! I really like it.” Mary: “ ___________________.”
A. You’re welcome B. Don’t mention it C. No, not at all D. It’s nice of you to say so