单项选择Look!There are a lot of children ____ on the playground.

单项选择Look!There are a lot of children ____ on the playground. 单项选择:There are a lot of tall buildings on ___ side of the ri Look!( )children( )playing on the playground.A:The number of There are a lot of children ____(play) basketball there. Look!A number of students ____(be) on the playground. Look!There are a lot of children playing in the ground.为什么要用 There are a lot of children's p( ) on Sunday. There are many trees on ____ of the street.There are a lot o There are a lot of volunteers_____ are helping the children 英语填空.1.there _ (be)a lot of children in the playground befor Look!There are a lot of gifts ______ on the Christmas tree. Look!There are a lot of ____________(leaf)on the ground.