zoo animals a the text on reading She is the
cái này ghép như nào
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6. a
7.b
8. a
9.c
10.c
11. c
12. b
13. c
14.d
15.a
16. b
17.a
18. b
19.c
20.b
21.a
6. a
7.b
8. a
9.c
10.c
11. c
12. b
13. c
14.d
15.a
16. b
17.a
18. b
19.c
20.b
21.d
a.S=1-2+3-4+...+99-100
=(1-2)+(3-4)+...+(99-100)
=(-1)+(-1)+...+(-1)
Vì từ 1->100 nên có 50 cặp
=> có 50 số -1
=>(-1)+(-1)+...+(-1)=-50
=>1-2+3-4+...+99-100=-50
b. n + 5 chia hết cho n - 2
n - 2 + 7 chia hết cho n - 2
Mà n - 2 chia hết cho n - 2
=> 7 chia hết cho n - 2
n - 2 thuộc Ư(7) = {-7 ; -1 ; 1 ; 7}
n - 2 = -7 => n = -5
n - 2 =-1 => N = 1
n - 2 = 1 => n = 3
n - 2 = 7 => n = 9
Vậy n thuộc {-5 ; 1 ; 3 ; 9}
we are going to see a movie at a 3D cinema
(to see ko hợp lý cho lắm)
It's a good idea for us to do exercises every morning.
1. We were climbing in the mountain when it started to rain
2. Jack was talking to his friends when the ball hit his head.
3. While the boys were playing soccer, the girls were dancing.
1. Lỗi sai: isn't --> are not
2.Lỗi sai: little --> few
3. Lỗi sai: any --> some
4.Lỗi sai: any--> some; some--> any
5. Lỗi sai: few --> little
6. Lỗi sai: many --> some
7. Lỗi sai: any --> some
8. much --> many
9. Lỗi sai: some --> any
10.a lot of --> any
11.what --> where
12. a lot of --> any
13. kid --> kind
14. yoru --> your/ when --> how often
15. homework --> his homework
16. near to --> near
17. very --> any
She is reading a text on the zoo animals.
Câu này thừa 1 chữ 'the' nhé