The Greens working in the garden now.A

The Greens working in the garden now.A
The Greens working in the garden now.
A.am B.is C.are D.were
Does he often his mother the room?
A.help,cleans B.help,clean C.helps,cleaning D.helps,clean
Must we finish our homework now?
NO,you .You finish it after school.
A.needn't,may B.mustn't,may C.can't can D.needn't,must