Look!There are a lot of children playing in the ground.为什么要用

Look!There are a lot of children playing in the ground.为什么要用 Look!There are a lot of ____________(leaf)on the ground. Look!There are ----------children in the park.A.thousands of On Sundays there were a lot of children playing in the park, On sunday there were a lot of children playing in the park _ 单项选择Look!There are a lot of children ____ on the playground. There are a lot of volunteers_____ are helping the children There are ()(lot)of children in the room look!there are a lot of fish in the lake.——are swimming happ there are a lot of fish in the river为什么用are Look, there are a lot of ducks s_ in the river. look!there are a lot of stars in the sky tonight的意思