Cho hệ phương trình {4x-3y=6

                                   {-5x+ay=8

a) Giải hệ phương trình với a=3

b) Tìm a để hệ phương trình có nghiệm âm duy nhất

combine these pairs of sentences using relative pronouns

7. They are looking for the man and his dog. They have lost the way in the forest.

8. The tree has lovely flowers. The tree stands near the gate of my house.

9. My wife wants you to come to dinner. You were speaking to my wife.

10. The last man has just returned from the farm. I want to talk to him at once.

11. The students will be awarded the present. The student's reports are very valuable.

12. The book was a lovely story. I was reading it yesterday.

13. The botanist will never forget the day. He found a strange plant on that day.

14. Someone is phoning you. He looked for you three hours ago.

15. The man works for my father's company. The man's daughter is fond of dancing.

Chọn từ/ cụm từ thích hợp (ứng với A hoặc B, C, D) để hoàn thành mỗi câu sau.

Câu 6: It doesn’t seem necessary for us ______ every Monday.

A. to meet B. meeting C. met D. meet

Câu 7: The ______ of the moon causes the tides on the earth.

A. attract B. attraction C. attractive D. attractiveness

Câu 8: I was reading when suddenly the lights ______.

A. opened up B. came in C. put out D. went out

Câu 9: I felt so embarrassed; I was sure that someone ______ at me.

A. was looking B. has been looking

C. is looking D. were looking

Câu 10: It ______dark. Shall I turn on the light?

A. got B. was getting C. gets D. is getting

Câu 11: We didn't enjoy our holidays ______ the weather was so awful.

A. but B. because C. if D. although

Câu 12: We ______ this course by the end of next year.

A. had finished B. have finished

C. were finishing D. will have finished

Câu 13: Tim ______ in three movies already. I think he’ll be a star some day.

A. had appeared B. was appearing

C. is appearing D. has appeared

Câu 14: The situation continues to get worse and ______.

A. worst B. bad C. worse D. badly

Câu 15: Peter: “I enjoy listening to pop music."

Maria: “______.”

A. Neither do I B. I don’t C. I’m, too D. So am I

Câu 16: As it was raining, Jane didn't ______ like walking home.

A. wish B. want C. fancy D. feel

Câu 17: Do you know the house ______ which she lives with her grandmother?

A. in B. with C. by D. to

Câu 18: It’s very kind ______ you to help me with the homework.

A. with B. to C. of D. in

Câu 19: Maria: “I’m taking my driving test tomorrow.”

Sarah: “______!”

A. Good luck B. Good time C. Good day D. Good chance

Câu 20: She didn’t even ______ goodbye to me when she left.

A. tell B. speak C. talk D. say

Câu 21: She hasn’t written to John ______ she left school.

A. before B. after C. when D. since

Câu 22: Tell me ______ there is anything special that you would like to do now.

A. which B. if C. what D. though

Câu 23: I ______ thirty cigarettes a day, but now I have cut down to ten.

A. am used to smoke B. used to smoke

C. get used to smoke D. am smoking

Câu 24: If you ______ John, tell him I'll phone him later.

A. were seeing B. see C. has seen D. saw

Câu 25: Please shut the gate ______ the dog won’t get out.

A. in order to B. in order for C. so as to D. so that

Câu 26: You have got a scholarship; you are luckier______.

A. as I do B. than I am C. than I have D. than I do

Câu 27: I was ______ to find that they had already left.

A. disappointing B. disappoint

C. disappointment D. disappointed

Câu 28: I asked Barbara to let me ______ her car for the weekend.

A. used B. to use C. use D. using

Câu 29: Ann lives in London. She ______ there for ten years.

A. was living B. had been living

C. is living D. has been living

Câu 30: He felt very sad because he had ______ friends in the village.

A. few B. little C. a few D. a little

Chọn phương án (A hoặc B, C, D) ứng với từ/ cụm từ có gạch dưới cần phải sửa để các câu sau trở thành chính xác.

Câu 1: Despite the sun was shining, it wasn’t warm enough

A B C

for our children to go swimming.

D

Câu 2: Do you mind to go out with her to buy some ice creams?

A B C D

Câu 3: They were all looking forward to spend their holiday at

A B C

the seaside the following summer.

D

Câu 4: My father prefers watching films at home than going to the cinema.

A B C D

Câu 5: My mother said me to sit down at the table and do my homework.

A B C D

Đọc kỹ đoạn văn sau và chọn phương án đúng (ứng với A hoặc B, C, D) cho mỗi câu từ 36 đến 40.

Thomas Edison was born in Milan, Ohio, in 1847. His family moved to Port Huron, Michigan, when he was seven years old. Surprisingly, he attended school for only two months. His mother, a former teacher, taught him a few things, but Thomas was mostly self-educated. His natural curiosity led him to start experimenting at a young age. Thomas Edison lit up the world with his invention of the electric light. Although the electric light was the most useful, it was not his only invention. He also invented the record player, the motion picture camera, and over 1,200 other things. About every two weeks he created something new. He worked 16 out of every 24 hours. Sometimes he worked so intensely that his wife had to remind him to sleep and eat. Thomas Edison died in 1931, in West Orange, New Jersey. He left numerous inventions that improved the quality of life all over the world.

Câu 36: Thomas Edison was ______.

A. an inventor B. a teacher C. a discoverer D. an explorer

Câu 37: In 1854 Edison’s family ______.

A. bought a new house in Milan, Ohio

B. sent him to a school in New Jersey

C. moved to Port Huron, Michigan

D. decided to settle in Milan, Ohio

Câu 38: The word “self-educated” in the passage mostly means ______.

A. “having had a high education” B. “having taught himself”

C. “having had good schooling” D. “having been well taught”

Câu 39: Edison died at the age of ______.

A. 84 B. 74 C. 47 D. 76

Câu 40: Which of following statements is NOT true about Edison?

A. He didn’t go to school at all.

B. He worked very hard.

C. He invented the motion picture camera.

D. He made numerous inventions.

Chọn từ/ cụm từ thích hợp (ứng với A hoặc B, C, D) để hoàn thành mỗi câu sau.

Câu 6: It doesn’t seem necessary for us ______ every Monday.

A. to meet B. meeting C. met D. meet

Câu 7: The ______ of the moon causes the tides on the earth.

A. attract B. attraction C. attractive D. attractiveness

Câu 8: I was reading when suddenly the lights ______.

A. opened up B. came in C. put out D. went out

Câu 9: I felt so embarrassed; I was sure that someone ______ at me.

A. was looking B. has been looking

C. is looking D. were looking

Câu 10: It ______dark. Shall I turn on the light?

A. got B. was getting C. gets D. is getting

Câu 11: We didn't enjoy our holidays ______ the weather was so awful.

A. but B. because C. if D. although

Câu 12: We ______ this course by the end of next year.

A. had finished B. have finished

C. were finishing D. will have finished

Câu 13: Tim ______ in three movies already. I think he’ll be a star some day.

A. had appeared B. was appearing

C. is appearing D. has appeared

Câu 14: The situation continues to get worse and ______.

A. worst B. bad C. worse D. badly

Câu 15: Peter: “I enjoy listening to pop music."

Maria: “______.”

A. Neither do I B. I don’t C. I’m, too D. So am I

Câu 16: As it was raining, Jane didn't ______ like walking home.

A. wish B. want C. fancy D. feel

Câu 17: Do you know the house ______ which she lives with her grandmother?

A. in B. with C. by D. to

Câu 18: It’s very kind ______ you to help me with the homework.

A. with B. to C. of D. in

Câu 19: Maria: “I’m taking my driving test tomorrow.”

Sarah: “______!”

A. Good luck B. Good time C. Good day D. Good chance

Câu 20: She didn’t even ______ goodbye to me when she left.

A. tell B. speak C. talk D. say

Câu 21: She hasn’t written to John ______ she left school.

A. before B. after C. when D. since

Câu 22: Tell me ______ there is anything special that you would like to do now.

A. which B. if C. what D. though

Câu 23: I ______ thirty cigarettes a day, but now I have cut down to ten.

A. am used to smoke B. used to smoke

C. get used to smoke D. am smoking

Câu 24: If you ______ John, tell him I'll phone him later.

A. were seeing B. see C. has seen D. saw

Câu 25: Please shut the gate ______ the dog won’t get out.

A. in order to B. in order for C. so as to D. so that

Câu 26: You have got a scholarship; you are luckier______.

A. as I do B. than I am C. than I have D. than I do

Câu 27: I was ______ to find that they had already left.

A. disappointing B. disappoint

C. disappointment D. disappointed

Câu 28: I asked Barbara to let me ______ her car for the weekend.

A. used B. to use C. use D. using

Câu 29: Ann lives in London. She ______ there for ten years.

A. was living B. had been living

C. is living D. has been living

Câu 30: He felt very sad because he had ______ friends in the village.

A. few B. little C. a few D. a little

II. Circle the best option

17. Nguyen Du was a famous................in the museum last week.

A. poet B. poem C. poetic D. poetry

18. She.........................in Da Lat since 1998.

A. lived B. lives C. has lived D. will live

19. My sister enjoys.................the guitar.

A. to play B. playing C. played D. play

20. I wish they...................here now.

A. come B.are coming C. comed D. came

21. Truyen Kieu........................by Nguyen Du.

A. wrote B. was written C. written D. was writed

22. If you want to improve your English,..................

A. we should help you B. we could help you C. we would help you D. we can help you