4 . 选词填空，将其序号填在括号内。

A. put on             B. look out for             C. does well              D. is bad for            E. travel around the world

1. Sam like travelling. He is going to _________.
2. Sweet food ________ our teeth.
3. We will _________ a play at the party.
4. When you cross the road, you must ________ bikes and cars.
5. David ________ at school.

5 . 根据句意选词填空。

A. see     B. around     C. Big Ben     D. plane     E. Australia     F. Toronto

1. They are going to ______ to see the Sydney House.
2. —How is he going to America?

—He’s going there by ______.

3. Let’s climb the CN Tower in ______.
4. He wants to see ______ in London.
5. They want to travel ______ the world.
6. I want to ______ all my favourite places.