\(\dfrac{x}{2}+\dfrac{x}{4}=\dfrac{1}{6}\)

\(\dfrac{2x+x}{4}=\dfrac{1}{6}\)

\(\dfrac{3x}{4}=\dfrac{1}{6}\)

\(3x=\dfrac{1}{6}.4\)

\(3x=\dfrac{2}{3}\)

\(x=\dfrac{2}{3}:3=\dfrac{2}{9}\)

When.........you born ? In March

A.be B.is C.was D.were

Khi cọ xát, thanh thủy tinh nhiễm điện dương. Mà khi đưa quả cầu A lại gần thanh thủy tinh thì bị đẩy → quả cầu A nhiễm điện dương. Nhưng khi đưa quả cầu A lại gần quả cầu B thì thấy chúng hút nhau, nên nhiễm điện khác loại → quả cầu B nhiễm điện âm

1. We cycle safely

→ We are safe cyclists.

2. You play tennis well

→ You are a good tennis player.

3. He reads quickly

→ He is a quick reader.

4. Minh writes carelessly.

→ Minh is a careless writer.

1. won

2. improve

3. popular

4. badly

5. follow

6. carefully

7. explore

8. prepare

9. carelessly

10. teenagers

1. shouldn't

2. should

3. must

4. must

5. can't

6.Can

Lan: Would you like to play badminton?

Hoa: I'd like to but I play it very badly

Lan: So do I, but if we play it every day , we can soon play it well.

Hoa: That's right. But we need to finish our homework first.

Lan: I've finished all my homework. What about you?

Hoa: I ve finished my Math homework but not my English exercises.It may take me fifteen minutes to finish them. Can you wait?

Lan: No, I can't, I also have to go and get the rackets and the shuttlecock while you are doing your homework.

Hoa: That's a good idea but what about the net ?

Lan: I have a new one here.

Hoa: I must go now.

Lan: Yes, you can come back here in 20 minutes.

Hoa:Bye, Lan

Lan: Bye. See you soon, Hoa.

Lan:

Sửa câu: 6. to → bỏ đi; không có sửa từ by → before .

1. specially → special

2. ought see → ought to see

3. Would you like play → Would you like to play

4. must not finish → must finish

5. invents → invented

6. by → before

7. good → well

8. shouldn't → should

9. hardly → hard

10. careless → carelessly

a. False

b. True

c. True

d. False

e. False

f. True