1000 + 2000 = 3000

dễ mà

III.

1. address

2. home

3. speak

1. The seas and the rivers are too dirty to swim in.

2. There is to much smoke in the air in many cities in the world.

3. No, they can't

4. Yes, it is

90% của 100 là :

     90 x 100 : 100 = 90

ai k mình mình k lại

5 con lac da