读短文，选答案。
I am on a bus on a rainy day, and a woman with a dog gets on the bus. It is a big dog and its feet are not
clean. I don't want the dog to sit near me. But the woman says to the driver, " Oh, I pay for my dog. Can he
sit here like the other people? " The driver looks at the dog and says, " Yes, madam, but he must not put his feet on the chair ".
1. I am on a ___________.[ ]
A. car
B. bus
2. It's ___________ today.[ ]
A. rainy
B. sunny
3. The dog's feet are ___________.[ ]
A. big
B. not clean
4. The dog ___________ sit on the chair.[ ]
A. can
B. can't