| A. Because I dropped my bag. B. He has to pull the door. C. We are going to go to the beach. D. He is pushing the elephant. E. She had a cold. |
Mr. and Mrs. Black have two sons and three daughters. They also have a cat. They have a big house. Their house has a kitchen, five bedrooms, two bathrooms and two other rooms.
The Black family have some trees near their house. They have two cars. On Saturday and Sunday, they go to the seaside in their cars.
Mr. and Mrs. Black work five days a week. They are teachers. They help their students. They also help their sons and daughters.
1．Mr. and Mrs. Black have five children.In the zoo
| A．was; is | B．did; does | C．couldn’t; can |
| A．don’t; can | B．no; must | C．don’t; must |
| A．Can; must | B．Must; must | C．Can; can’t |
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