Tìm x,y,z,t biết{x+y+z+t=12

x:y:z:t=3:5:7:9

x nhân 5=x ²

(3x -1 )²⁰¹⁷=(3x -1 )²⁰¹⁸

(x-1) ^{x+ 2}=(x-1)^x

C= 1.4 + 2.5 + 3.6 +...... + 99.102

Dấu chấm là nhân nha!

Cảm ơn các bạn!

7x=4y và y - x =24

x/y = 2/5 và y.x = 40

I Choose the best answer
1. Would you like………….English with foreigners? ( speak - to speak - speaking - speaks)
2. What is she …………? She’s kind and helpful (look like - like - likes - look)
3.My brother was born ……………February 23th, 2005 (in - on - at - for )
4. Where’s the cat ? It’s not in the house. It’s …………(inside - outside - downstairs - upstairs)
5. Mai spends her free time ………..comic books ( read - reading - to read - read)
6. Ba’s friends usually love his sense …………humor ( at - on - of - on)
7. Hoa …………..a letter from her old friend yesterday ( gets - has got - received - has received)
8. They are going to have a wonderful party ………….Christmas (on - at - in - to )
9. Her sister is a ……student. She always gets good grades ( kind - confident - lazy - hard-working)
10. Jenny’s not here now. Can I take a ( an ) ……..? ( message - advice - news - information)
11. Look at the picture and tell where it is :
a. In Cambodia
b. In India
c. In China
d. In VietNam

12. This sign says :
a. You must turn right
b. You do not turn right
c. You must go straight a head
d. Let’s turn right

IX. Em hãy dung từ gợi ý để viết hoàn chỉnh những câu sau.(linh)
Ví dụ : 0. The Nile / longest / river / world.
The Nile is longest river in the world.
1. Trang / the / good / student / our class .
2. Refrigerator / next /closet / and / front / dishwasher.
3. Traveling / train / slower / but / intersesting /traveling / plane.
4. Miss / Hue / take care / sick children /same hospital / as / mother.
5. Which / most / suitable house / Mr. Lam /and / family ?
6. Uncle / farmer / and / grow / lot / vegetables / his farm.
7. It / difficult / find / a partment / Ho Chi Minh city ?
8. Brazil / most / successful / soccer team / world.
9. Who / the / fat / person / your / group?
10. Lesson / this year / long / and / more difficult / those / last year.

VII. Em h ãy đọc đoạn văn sau rồi chọn đáp án đúng cho mỗi câu hỏi.
Who are the best drivers? Which drivers are the safest on the roads? According to a recent survey, young and inexperienced drivers are the most likely to have an accident. Older drivers ar more careful. Young mem have the worst accident records of all. They often choose faster cars with bigger engines. One of the most interesting facts in the survey is that passengers have an effect on the driver. When young male drivers have there friends in the car, their driving become worse. When there wife or girlfriend is in the car, however, there driving is better. But opposite is true for women. Their driving is more dangerous when their husband or boyfriend is in the car.
0. Who have the worst accident records of all?
 A. Young men B. Young women C. Old men D. Inexperienced men
1. According to the survey, who are the most likely to have an accident ?
A. Young and experienced drivers. B. Old and inexpericenced drivers.
C. Young and old drivers. D. Young and inexpericenced drivers.
2. Young men often choose ………………………….. .
A. expensive cars. B. fast cars with big engines.
C. slow cars with big engines. D. fast car with small engines.
3. Who have an effect on the driver ?
A. passengers B. policemen C. children D. journalists.
4. When young male drivers have the wife of girlfriends in the car, their driving becomes ………………………….
A. worse B. better C. slower D. faster

VI. Em hãy điền một danh t ừ chỉ nghề nghiệp thích hợp cho mỗi câu dưới đây.
V í d ụ : 0. She teachers is in a school. She is a teacher .
1. He works in a hospital. He takes care of sick people. He is a ……………………..
2. She writers articles for newspapers. She is a …………………………… .
3. He works in a hospitals. He takes care of people’s teeth. He is a ……………………. .
4. He works on a farm. He grows vegetables and raises cattle. He is a ………………….. .
5. She works in a studio. She paint pictures. She is a ……………………… .