1, Playing with maches is very dangerous
=> It is
2,The table is in the middle of the kitchen
=> There is
3,The room is very comfortable, they feel asleep easily
=> The room
4,Mai is not as tall as Hoa(as...as)
=>Mai
=>It is dangerous to play with matches (bạn ghi sai) =>There is a table in the middle of the kitchen =>The room makes they fell asleep easily beacause it is comfortable =>Hoa is not as short as Mai