1. B
2. A
3. B
4. C
5. A
6. A
7. D
8. A
9. B
10. A
11. A
12. D
13. C
14. A
15. B
16. B
17. ....
18. B
19. C
20. A
21. C
22. B
23. D
24. D
25. A
26. B
27. D
28. B
29. A
30. C

​_ cẬU CÓ THỂ THAM KHẢO BÀI LÀM TRÊN ĐÂY Ạ, CHÚC CẬU HỌC TỐT:>

1. He often …………… up late.

A. get up  B. gets up C. got up D. is get up

2. ……….. you often ……………. TV?

A. Do/watch B. Do/watches C. Have/watch D. Does/watches

3. Mr. Brown ……………….. English.

A. Speak  B. speaks C. does speak D. speakes

4. I usually ………………….. shopping on weekend.

A. goes  B. does go C. go D. do

5. Hai often ………………… his face at 6.15.

A. washes B. washing C. does wash D. wash

6. Thanh and Mai always …………………… a movie on Saturdays.

A. See B. sees C. do see D. does

7. …………. he often …………………… a bus to school?

A. Do/take B. is/take C. does/takes D. does/take

8. We …………………… student in class 8A.

A. are B. is C. do D. eat

9. She ………………… homework in the evenings.

A. Do not B. does not do C. do not do D. do

10. He usually …………………… a taxi to the railway station

A. takes B. take C. taking D. does take

11. They often ……………………their parents on every Saturday.

A. visit B. visits C. does not visit D. visiting

12. My and I always …………………… to the countryside by bus.

A. went B. goes C. do go D. go

13. Our teacher usually …………………… us many exercises.

A. give B. is give C. gives D. does give

14. He often …………………… a train to work.

A. catches B. catch C. don’t catch D. is catch

15. The sun ……………………in the East.

A. rise B. rises C. raise D. does rise

16. My old friend, Manh …………………… to me twice a month.

A. phone B. phones C. phoned D. do phone

17. What she says …………………… true.

A. is B. are D. do D. does

18. The weather generally ……………. quite hot in July and August.

A. get B. gets C. got D. getes

19. Michael………….. thirsty eight hours a week.

A. worked B. work C. works D. workes

20. I ….. sorry. I …late.

A. am/am B. is/is C. are/are D. am/ am not

21. The earth ……………………. the sun.

A. circle B. does circle C. circles D. do circle

22. He usually ………………… the trees in the morning.

A. water B. waters C. is water D. does water

23. The sun …………………… in the West.

A. set B. is set C. does set D. sets

24. They always ………………… noise in the class.

A. do B. does C. makes D. make

25. Hung …………. often …………………… camping in the summer.

A. does not/ go B. doesn’t goes C. does/go D do/go

26. …………Son …………………… to their friends every summer holiday?

A. Do/write B. Does/call C. Is/call D. Are/calls

27. Ho Ngoc Ha ……… singer.

A. am B. are C. do D. is

28. The bus…………. At 10 am.

A. start B. starts C. go D. is start

29. Airplanes …….. slow. They ………. fast.

A. are/ are B. is/ is C. are/ is D. is/ are

30. Ice cream and candy …….. sweet.

A. am B. is C. are D. be

* Chia về thì hiện tại đơn nhed ~~ Nếu bạn chưa có cấu trúc thì có thể lên gg học :)))

Nếu xóa 2 chữ số cuối cùng thì ta được số mới gấp số cũ 100 lần

Ta có sơ đồ: 

Số mới:_{|     |     |     |}..........._{|     |     |}

                   ^{100 phần}   

Số cũ: |      |

Hiệu 2 số là: 100-1=99( phần)

Ta có :972:99=9( dư 81)

Số cần tìm là: 9x100+81=981

             Đáp số : 981                           

          roi nha

nhóm gì dạ

Oops... mk ko có nhu cầu.

a) x² + 10x + 16 = 0

<=> x² + 2x + 8x + 16 = 0

<=> x( x + 2 ) + 8( x + 2 ) = 0

<=> ( x + 2 )( x + 8 ) = 0

<=> \(\orbr{\begin{cases}x+2=0\\x+8=0\end{cases}}\Leftrightarrow\orbr{\begin{cases}x=-2\\x=-8\end{cases}}\)

b) 4x² - 12x - 7 = 0

<=> 4x² + 2x - 14x - 7 = 0

<=> 2x( 2x + 1 ) - 7( 2x + 1 ) = 0

<=> ( 2x + 1 )( 2x - 7 ) = 0

<=> \(\orbr{\begin{cases}2x+1=0\\2x-7=0\end{cases}}\Leftrightarrow\orbr{\begin{cases}x=-\frac{1}{2}\\x=\frac{7}{2}\end{cases}}\)

a. \(x^2+10x+16=0\)

\(\Leftrightarrow x^2+8x+2x+16=0\)

\(\Leftrightarrow x\left(x+8\right)+2\left(x+8\right)=0\)

\(\Leftrightarrow\left(x+2\right)\left(x+8\right)=0\)

\(\Leftrightarrow\orbr{\begin{cases}x+2=0\\x+8=0\end{cases}}\Leftrightarrow\orbr{\begin{cases}x=-2\\x=-8\end{cases}}\)

b. \(4x^2-12x-7=0\)

\(\Leftrightarrow4x^2+2x-14x-7=0\)

\(\Leftrightarrow2x\left(2x+1\right)-7\left(2x+1\right)=0\)

\(\Leftrightarrow\left(2x-7\right)\left(2x+1\right)=0\)

\(\Leftrightarrow\orbr{\begin{cases}2x-7=0\\2x+1=0\end{cases}\Leftrightarrow}\orbr{\begin{cases}2x=7\\2x=-1\end{cases}}\Leftrightarrow\orbr{\begin{cases}x=\frac{7}{2}\\x=-\frac{1}{2}\end{cases}}\)

Góc xOy kề bù góc xOz nên \(\widehat{xOy}+\widehat{xOz}=180\)

\(\widehat{kOt}=\widehat{kOx}+\widehat{xOt}=\frac{1}{2}\widehat{xOz}+\frac{1}{2}\widehat{xOy}=\frac{1}{2}\left(\widehat{xOz}+\widehat{xOy}\right)=\frac{1}{2}.180=90\)

48 - 3 . ( x + 5 ) = 24

3 . ( x + 5 )        = 48 - 24

3 . ( x + 5 )        = 24

x + 5                 = 24 : 3

x + 5                 = 8

x                       = 8 - 5

x                       = 3

Vậy x = 3 

học tốt!!!