Bài1: viết lại câu

1.Although Tom was a poor student, he studied very well.

=> In spite of being a poor student, Tom studied very well.

2.Mary couldn't go to school because she was sick

=>Because of her sickness, Mary couldn't go to school.

3.Although the weather was bad, She went to school on time

=> Despite the bad weather, she went to school on time.

4. My Mother told me to go to school although I was sick

=> In spite of my sickness, my mother told me to go to school.

5. Because there was a big storm, I stayed at home

=> Because of a big storm, I stayed at home.

BY

BUT

Paul Anka both plays the piano and composes music.

B. Restaurant (Nhấn âm 1)

Các từ còn lại nhấn âm 2.

Bội của 4 từ 12 đến 200 là 12;16;20;...;200

Số bội của 4 từ 12 đến 200 là (200 - 12) : 4 + 1 = 48 (số)

1. My neighborhood is famous for good and cheap restaurants. (fame)

2. I like the city life because there are many kinds of entertainment (entertain)

3. They like the sunny weather. (sun)

4. We shouldn't waste electricity and water. (electric)

5. Let him do it himself (he)

6. Long goes sailing at the weekend. (sail)

7. His ambition is to be a millionare one day. (million)

8. There are two secretaries in his office. (secretary)

9. I don't like the rainy weather. (rain)

10. Is Quang Ninh a mountainous province? (mountain)

11. Air pollution is a big problem in many cities in the world. (pollute)

12. She sent her best wishes for my future happily (happy)

13. He was punished for his laziness (lazy)

14. She looks attractive in her new coat. (attract)

15. These oranges are very juicy (juice)

16. Some small gooses are swimming in the lake. (goose)

17. The three roofs of our school are old. (roof) (?)

B1/

a/ (a-b)-(b+c)+(c-a)-(a-b-c) = a-b-b-c+c-a-a+b+c = -a -b +c = -(a+b-c)

b/ (a-b)+(c-d)-(a-c) = a-b+c-d-a+c = -b-d+2c = -(b+d)+2c

B2/

2 + 5 + 8 - 11 +14 - 17 + ... + 98 - 101

= (2+5) + (8-11) + (14-17) + ... + (98-101)

= 7 + (-3) + (-3) + ... + (-3) (Có tất cả16 số hạng (-3))

= 7 + 16.(-3) = -41

\(\frac{26}{7+b}< 0\) \(\Rightarrow\left\{\begin{matrix}26>0\\7+b< 0\end{matrix}\right.\) \(\Rightarrow b< -7\)

Vậy số nguyên b lớn nhất là b = -8