It's Saturday.I can play with my friends.
Class is over.I can have a rest.
I'm fine.I can walk home.
It's raining.I can't go home,because I didn't take umbrella this morning.
It's seven o'clock.I can't have my breakfast because I'm late for school.
You look so hungry.You can eat something first before working.
My mother is tired.She can't wash clothes for me,so I have to wash my clothes myself.
It's dark.I can't play outside anymore,because my mum will be worried about me.