Unit 1　You must be careful of falling stones.

2.Listen and answer the questions.

Betty:Mum,I'm leaving early tomorrow morning.It's the trip to the Western Hills.

Mum:Have you got everything ready?

Betty:Yes,I've just put everything in my bag.

Mum:So who's leading the group?

Betty:Mr Jackson.He'll tell us everything about personal safety.

Mum:Do you have to take anything to eat?

Betty:Yes,we do.Everybody's bringing a picnic lunch.

Mum:You should take plenty of water.You mustn't drink the water from a stream.And don't walk too close to the sides of the hill path.It's very high in places.

Betty:It's OK,Mum.Relax.It's a walking trip.There's nothing much to worry about.