Look!( )children( )playing on the playground.A:The number of
Look!( )children( )playing on the playground.A:The number of
a number of children playing on the playground.the number of
A number of students ________ playing on the playground, and
Look!A number of students ____(be) on the playground.
A large number of students are on the playground,playing bas
单项选择Look!There are a lot of children ____ on the playground.
The headmaster saw the children playing on the playground
the headmasteu saw the children playing on the playground (变
A c( ) of students are playing basketball on the playground.
a g_____ of boys are playing football on the playground.
Look!The boys are playing ___ soccer on the playground. A.a
there are many children playing football on the playground,对