D C

5. D (âm 1 còn lại 2)

6. potato (âm 2 còn lại 1)

tu làm Ði bn oi

19 fried

20 gymnastic

21 breakfast

22 playing

23 vegetables

24 any

25 cooking

26 She is 13 years old

27 No, she doesn't

28 Yes, she does

29 Her mother needs twenty kilos of rice

30 No, she isn't

1C 2A 3D 4B

What about helping me with my HW?

I haven't met her for 3 days

Have you ever read that book yet?

The USA had colour TV in 1953

The Eiffel Tower is the most famous building in Paris

Ngoc has never been to HCM city before

1D 2D 3B 4C

Bài 5: 1.C

2.A

3.D

4.B

Bài 6: 1.What about helping me with my homework?

2. I haven't met her for three days

Bài 7: 1. Have you ever read that book yet?

2. The USA had colour TV in 1953

3. The Eiffel Tower is the most famous building in Paris

4.Ngoc has never been to Ho Chi Minh City before

Bài 8: 1.D

2.D

3.B

4.C

anh ơi em ko bt vì em mới lớp 2 anh thông cảm cho em nha 

\(a)x=9/20-(-13/24)=>x=9/20+13/24=119/120\)

\(b)x=-2/5-13/15=-19/15\)

\(c)-x=-1/8+1/12=-1/24=>x=1/24\)

\(d)-4/9-x=5/36=>x=-4/9-5/36=-7/12\) 

a.\(\Leftrightarrow x=\dfrac{9}{20}+\dfrac{13}{24}\Leftrightarrow x=\dfrac{119}{120}\)

b.\(\Leftrightarrow x=-\dfrac{2}{5}-\dfrac{13}{15}\Leftrightarrow x=\dfrac{-19}{15}\)

c.\(\Leftrightarrow-x=-\dfrac{1}{8}+\dfrac{1}{12}\Leftrightarrow-x=-\dfrac{1}{24}\Leftrightarrow x=\dfrac{1}{24}\)

d.\(\Leftrightarrow-x=\dfrac{5}{36}+\dfrac{4}{9}\Leftrightarrow x=-\dfrac{7}{12}\)

\(e.\Leftrightarrow\dfrac{x}{4}=\dfrac{31}{140}+\dfrac{3}{7}-\dfrac{2}{5}\Leftrightarrow\dfrac{x}{4}=\dfrac{1}{4}\Leftrightarrow x=1\)

f.\(ĐK:x\ne0\)

\(\Leftrightarrow\dfrac{5}{x}=\dfrac{1}{2}-\dfrac{5}{12}+\dfrac{1}{8}\Leftrightarrow\dfrac{5}{x}=\dfrac{5}{24}\Leftrightarrow x=24\left(tm\right)\)

g.\(\Leftrightarrow x=\dfrac{11}{10}-\dfrac{1}{9}\Leftrightarrow x=\dfrac{89}{90}\)

h.\(\Leftrightarrow\dfrac{5-x}{12}=\dfrac{3}{8}-\dfrac{7}{24}\Leftrightarrow\dfrac{5-x}{12}=\dfrac{1}{12}\Leftrightarrow5-x=1\Leftrightarrow x=4\)

---> My teacher is tall and slim. 

some - some - any - a - an

some

some 

any 

a 

an

I.

1.B

2.A

3.D

4.C

II.

1.A

2.C

3.B

4.D

5.C

6.B

7.B

8.D

III.

1. feels

2. is playing

3. didn't ride

4. to eat

IV.

1.a

2.c

3.d

4.b

1 D

1 are

2 bought

3 are watching

4 gave

5 will go

6 told

7 is weraing

8 watching

9 goes

10 will visit

1 D

2 B

3 A

4 D

1 B

2 D

3 B

4 C