1、 do The students be cleaning the classroom?
2、The children havn't lunch at home
3、where is The old man
4、There is a potatoe on the table.
5 this is your pencil
1.its
2 are singing
3 have
4 is
5 will do
6 have flyed
7 swimming
8 drawing
9 grape
10 has be
B B