a, \(=2x^2y^2-xy^2-4+5x^2y\)

-> bậc 4 

b, \(=\dfrac{2}{3}xy^4-xyz-2x^4y+1\)

-> bậc 5 

1. an
2. are
3. is
4. my
5. three
\(PeaGea\)

1 - an
2 - are
3 - is
4 - my
5 - three

1 an

2 are

3 is

4 my

5 three

lỗi rồi

1 D

2 A

3 C

4 D

5 A

6 B

7 B

8 A

9 C

10 A

15 C

16 A

17 C

18 A

19 A

20 D

Hết luôn ấy à?

hơi nhiều à nha

nhiều quá bé ơi

giảm tải câu hỏi đi e

1 It was such a difficult climb that we stopped to rest several times

2 She didn't ran fast enough to win the race

3 It was such a heavy bag that I had to ask for help

4 The house is too small for us to live in

5 Jack's suit was so elegant that everyone complimented him

6 My sister is not old enough to watch horror films

7 My mother is such a wise person that people often aske her for advice

8 The package is not light enough for you to lift by yourself

9 This book is too old for the children to eat

10 It was such an interesting book that I couldn't put it down

11 It is such a weak bird that it can't fly

12 These boyss aren't old enough to watch that film

13 They are such small sandals that they don't fit me