It is Sunday morning，Helen and her brother David are 1a walk in the park. There are lots of signs in the park. Helen knows a lot 2 them. But David 3. Suddenly Helen sees a boy climbing a tree. She says to the boy,"Don't climb the tree. Can't you see the 4Over there?" The boy jumps off the tree soon. David points to the sign and says to Helen，"So the sign means we 5climb trees，right?"  "Yes." says Helen.

A

    A bus comes to the bus stop．An old man gets on it．There's no seat for him．"The boy will give his seat to you．"the bus driver says to the old man．But the boy in the seat doesn't stand up．The bus driver looks at the boy,then he says to the old man again in a high voice(声音)，"The boy will be happy to give you his seat．"This time the boy hears it．His face turns red．He gets up at once．The old man sits down and says to the boy,"Thank you,my boy．"

B

    It is a rainy day．A beautiful woman with a dog gets on a bus．The dog is big．Its feet are not clean．The conductor(售票员)doesn't want the dog to sit on the chair．But the woman says to the conductor,"I can buy a ticket(票)for my dog．Can he sit here like other people?"The conductor looks at the dog and says，"Yes，madam，but like other people，he must not put his feet on the chair．"

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Mrs Li：There are some old things in our home．Can I throw them away?

Mr Li：No．We should keep them．We canthem．

Mrs Li：How?

Mr Li：Look at this can．It can be a．It's just right for Amy's pens and pencils．

Mrs Li：OK．I'll keep it then．How about this bottle?

Mr Li：I can put some flowers in it．Then it will be a nice.

Mrs Li：And there is an．Do you have any ideas?

Mr Li：Yes．I can make a "No smoking" with it．

Mrs Li：Good idea．

Hi! I'm Joe. I'm 150 . I live in the city. There are a lot tall buildings in the city. People go to work by car, bus, or . At the weekend, some people enjoy themselves at the or . Some people visit museums or parks.