Last year, four children waited for their school bus every day for ten minutes, on the same dirty street corner. There were old bottles, parts of old bikes, and      soda cans（苏打罐） everywhere around the bus stop. The trees were brown and had no leaves, and there wasn’t any flower at all. It was ugly.
One Friday, one of the children looked at the corner and decided to do         about it. The next Monday, she brought a bag and      some of the old bottles to recycle. On Tuesday, she spent another ten minutes picking up old bottles, while   her  best friend  picked up soda  cans  and put them in a different         for recycling. On Wednesday, all the children  joined together. The corner became          !
The corner looked better but it was             ugly. So the next day the girl brought some flower seeds（种子）. She planted the seeds and watered them, and watered the        , too. She only had ten minutes a day but that was enough.
A few months later, this corner had become a beautiful      with pretty flowers and healthy trees. It only took ten minutes a day. Do you have ten minutes a day to help your city?

A．full B．empty C．cheap D．expensive

A．nothing B．anything C．something D．everything

A．gave B．offered C．bought D．collected

A．bag B．box C．room D．corner

A．ugly B．clean C．dirty D．green

A．so B．yet C．even D．still

A．trees B．plants C．flowers D．vegetables

A．city B．park C．garden D．street