Neil Armstrong said that one small (一步) for a man,one giant leap for mankind.
It is raining (大)outside. I have to stay at home.
You can't get to school on time, (除非)you hurry up.
It's (健康的)to eat more vegetables and less meat.
My dictionary is lost, could you please (借)one to me?
There will be less (污染)in 100 years.