Fill in can/can`t or must/mustn`t.
1. ____ i come tomorrow ? - i don't think so.
2. You _____ smoke in the hospital.
3. There`s nobody to help us. We ______do it ourselves.
4. The water in the river is cold, but you__________swim a little.
5. Ram______take his sister`s CDs.
6. The weather is warm , but you ________take an umbrella.
7. She _______speak Chinese.
8. There`s no time left. We __________hurry up.
9. You _________take the bus to get to the museum.