Amy:Look!There’s a TV show about dogs.

Lingling:Great! I like dogs.

TV presenter: Dogs are very useful.

TV presenter:This man is blind. He can’t see.This dog helps him.

TV presenter:This girl is deaf. She can’t hear. This dog helps her.

TV presenter:Last week,there was a fire.  This dog helped the firefighters.

Sam:Can we have a dog,Mum?

Ms Smart:No,we can’t.I’m sorry.Here is your dinner,hot dogs.

Lingling:Hot dogs!Are they…?

Sam:No.They’re sausages and bread.

All:Ha ha…