用must,can,can't,needn't,has to,have to,had to,will,造句

You must finish it on time.
Can I help you?
I'm afraid I can't go with you.
You needn't tell him about that.
She has to look after her mother.
I have to feed the animals.
I missed the bus.I had to run to school.
We will go to the park tomorrow.