why are they at the bus stop?

why are they at the bus stpp? they are going to meet at the bus stop at half past ten.中文 They w----for the bus at the bus stop. They are at the bus We are going to meet at the bus stop. at the bus stop 划线 （对划 They are waiting_____a bus stop. They are waiting什么us什么the bus stop. There are a lot of people at the bus stop Look.Your classmates are waiting at the bus at the bus stop. at the bus stop是什么意思 There are many people___(wait)for the bus at the bus stop My brother and I are waiting for the bus at the bus stop(对wa