Sorry😅😅

9.D.   
10.A

David gets on well with most of his colleagues.  
Because Lan was ill,she didn't go to Dông Ho village with her friends
 

B

2.i cycled to school yesterday morning.  
3.I stayed in last night.  
4.Andy tidied his bedroom on Saturday evening.  
5.The bus stopped outside our house five minutes ago

would be

1.this book is bought by her mother.

2.some cakes have been baked by my mom.

3.my car has been cleaned for 2 days by jenny

4.the robbers have been looked by the police day and night

5.the bike is riden by the little girl everynight

had worked

Khối lượng tính bằng gam của nguyên tử natri:

Khối lượng tính bằng gam của nguyên tử natri: