--A number of students _____ on the playground.

Look!A number of students ____(be) on the playground. A number of students ________ playing on the playground, and —A number of students ____ on the playground.    A large number of students are on the playground,playing bas Look!( )children( )playing on the playground.A:The number of A c( ) of students are playing basketball on the playground. a number of children playing on the playground.the number of 英语选择题 _____ of the students is playing on the playground. A number of students -----(enjoy) surfing the internet on we a number of the students a number of students还是a number of the students 选择：A number of students _____ come