1, D. fields

2, A. trolley

3, C. Vietnamese

4, C, you're welcome

5, C. our

6, C. teeth

7, D. in grade 5

8, C. is

9, D. stadium

10, C. bookstore

Tham khảo đi nhé :))))

1, D. Math

2, B. behind

3, C. stadium

4, A. they're

5, A.dessert

6, C. favourite

7, C. cutting

8, C. anyone

9, D. finishes

10, C. box

11, C. the biggest

12, D. twice a week

13, B. hotter

14, C. many

15, B. That's a good idea.

16, A. fingers

17, D. must

18, D. I like chicken best.

19, A. washes

don't think so

A. disagree

x.y=3.x+3.y

x.y-3.x-3.y=0

x.(y-3)-3.y=0

x.(y-3)-3.y+9=0+9

x.(y-3)-3.(y-3)=9

(x-3).(y-3)=9=3.3=1.9=9.1=(-1).(-9)=(-9).(-1)=(-3).(-3)

Với (x-3).(y-3)=3.3 => x-3=3 => x=6

=> y-3=3=>y=3

Tương tự như trên bạn tự tìm x;y khác nhé

a) the hottest

b) the most difficult

c) the greatest

d) the highest

e) the most exciting

f) the strongest

g) the most beautiful

h) the most intelligent

i) the largest

j) the most successful

mik chắc chắn 100% luôn đấy :)))

1.When does your father play tennis?

2.What subject do your class have on Monday?

3. Who might hi-tech robots look after?

4. What might people do on smartphones?

5. Where will we travel in the future?

bạn tham khảo đi nhé :))) mik chắc chắn đấy :))))

1. will have/might have

2. didn't play

3. is coming

4. goes

5. will help/might help

6. have done

7. likes

8. will have

Ta có:|2009²⁰⁰⁷x+2010|>0 với mọi x

=>GTNN của biểu thức bằng 0<=>|2009²⁰⁰⁷x+2010|=0<=>2009²⁰⁰⁷x=-2010

<=>x=-2010/2009²⁰⁰⁷

Phương thức biểu đạt trong bài này là Miêu tả nha bạn :))) mik chắc đấy :)))