1. The birds are singing at 5.am

2. The big dogs are barking at 7.am

3. Mrs.Thompson is getting up at 7.20 a.m

4. She is making her son's breakfast at 7.40 a.m

5. The mailman is delivering the letters at 7.50 a.m

6. Mrs.Thompson's son is washing his face at 7.55 a.m

7. The Thompsons family are eating breakfast together at 8 a.m

8. Mrs Thompson is driving to work at 8.20 am in her blue car

9. My classmate is skipping rope in the playground

10. My sister is studying in an international school

D nha 

Chiều dài của dây dẫn tỉ lệ thuận với điện trở của dây dẫn

`=>` Chiều dài tăng `3` lần thì điện trở cũng tăng `3` lần 

\(d'=\dfrac{d}{2}\) 

Tiết điện giảm `4` lần `-` Chiều dài tăng `4` lần 

`=>R` tăng `16` lần 

1-it is a long time since we last met

=> we haven`t...met each other for a long time

2-it is 5 years since i last visit grandparents

=>i haven`t...visited grandparents for 5 years

`1/2xx2/3xx3/4xx4/5xx5/6=1/6`

\(\left(\dfrac{4}{5}+\dfrac{1}{2}\right)\left(\dfrac{3}{15}-\dfrac{8}{13}\right)=\dfrac{13}{10}.\dfrac{-27}{65}=-\dfrac{27}{50}\)

`@An`