1. 阅读对话，选择正确的答案

Mark: Hi! It's 4 o'clock. School is over. Let's go to the playground.

Tom: OK. Let's play football.

Mr Zhang: Time to go home, kids.

Mark: What time is it now?

Tom: It's 6 o'clock. It's time for dinner.

Mark: Oh! Let's go!

1. （1） School is over at _______ o'clock.

   A . four B . three C . five
3. （2） Mark and Tom go to the_______ together.

   A . teachers' office B . gym C . playground
5. （3） It's 6 o'clock. It's time for _______.

   A . dinner B . lunch C . breakfast
7. （4） —When do they go home?
   —They go home at_______ o'clock.

   A . three B . six C . seven