1 Is it a cake?
2 Is she making a cake ?
3 Is he counting
4 Is it a picture
5 Is she drawing
6 Is the teacher reading
7 Is she a teacher
8 Are they teachers
9 are there the teachers
10 Are the teachers talking
11 Am I late
12 Am I a pupil
13 Am I reading
14 Am I writing a letter
15 Is he climbing a tree