Acartravelsatarateof50milesperhour.Howlongwillittaketotravel300miles?
I’m ten years old and my sister is two years older than me，so she is t_____ years old。
()It'snineo'clock.Imust______.
()What about __________?
Sheis______(good)thanAliceatswimming.
she_______(宾格)
