3. I watch TV after school.

4. I play with friends after school.

5. I read books after school.

6. I don't draw pictures after school.

7. I have a music lesson after school.

8. I help my mum after school.

Lời gải:

Chuyển bi thì tổng số bi không đổi. 

Tổng số phần bằng nhau:  (phần)

Số bi hộp A sau khi chuyển:  (bi)

Số bi hộp B sau khi chuyển:  (bi)

Số bi hộp A lúc đầu:

 (bi)

Số bi hộp B lúc đầu:

 (bi)

Đáp số : Hộp A : 57 bi 

              Hộp B : 33 bi

Bài 1 :

1.is going

2.is crying

3.Is...sitting

4.are trying

5.are cooking

6.are talking

7.am not staying

8.is lying

9.Are they traveling

10.isn't working

Bài 3 :

1. Do => doing

2.Play => playing

3.Does => is

4.Is => are

5.You are => are you

Bài 2 :

1.My father is watering some plants.

2.My mother is cleaning the floor.

3.Marry is having lunch with her friends at a restaurant.

4.They are asking a man about the way to the railway station.

5.My student is drawing a beautìul picture .

\(\dfrac{25}{100};\dfrac{75}{1000};\dfrac{9}{100};\dfrac{2}{10}\)