Isn't there anyone at home?
I'll knock again.
Everything is very quiet.
I'm sure there's no one at home.
But that's impossible.
Carol and Tom invited us to lunch.
Look through the window.
Can you see anything?
Nothing at all.
Let's try the back door.
Look! Everyone is in the garden.
They are having a barbecue.
Hello!
Let's go round to the back.
We've been waiting for you.
What a lovely surprise!
Now, come on in.
We were just going to start without you.