阅读下文，完成下题。

　　This is a picture of a classroom(教室)．The classroom is big and clean(干净)．You can see a teacher’s desk, five desks and six chairs．You can see a girl and a boy．

　　Three books are on the teacher’s desk．A pencil case is on a desk．Two pens are in the pencil case．A schoolbag is behind a chair．A ball is on the floor．

　　The girl is Lucy Smith．She is eleven．The boy is Mike Miller．He is twelve．They are good friends．Their(他们的)teacher is Miss Green．She is not here．

1．What is Lucy’s family name?

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2．Where are the two pens?

________________．

3．Is the ball on the desk?

________________．

4．Are Mike and Lucy good friends?

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5．Who(谁)is their teacher?

________________．