Acartravelsatarateof50milesperhour.Howlongwillittaketotravel300miles?
When you see foreign friends in our school，you can say to them“W_____ to my school
What's that man?
three__________ (序数词 )
I’m ten years old and my sister is two years older than me，so she is t_____ years old。
How many _____(hour) are there in a day?
