1. When they left they didn't lock the door
They left without locking the door.
2.There aren`t very many trees in our street.
There are only a few trees in our street.
3. It takes him a long time to get up in the morning.
He spends a long time getting up in the morning.
4. Renting a flat is very difficult here.
It's very difficult to rent a flat here.
5. This house is too small for us.
This house isn't big enough for us.
