6. They saw nobody in the room

-> They didnt see

7. The cafe has a lot of tables

-> There

8. London has more than thirty theatres

-> There are

9. Mary was very kind to me

-> Mary behaved

10. Should I call you tonight

-> Do you want

`6`. They didn't see anyone in the room.

`->` anyone dùng trong câu phủ định

`7`. There are a lot of tables in the cafe.

`->` There are + a lot of + N-số nhiều: rất nhiều 

`8`. There are more than thirty theatres in London.

`->` There are + N-số nhiều

`9`. Mary bedhaved kindly to me.

`->` S + V + adv

`10`. Do you want me to call you tonight?

`->` want sb to do sth: muốn ai làm gì