1. Must. 2. Mustn't . 3.must 4. Mustn't 5. Must. 6. Mustn't . 7. Mustn't . 8must .9 must . 10. Mustn't .11. Mustn't
1.won
2.have been playing
3.playing
4.drawn
5.yet
6.riding
7.have been playing
8.ever
9.has.
<span>1. John is buying a car.
2. We are visiting Africa this summer.
3. They are building a new bridge across the river.
4. Are you selingl your house?
5. He's finishing his book this year.
6. I am having a bath.
7. The children are starting tennis next year</span>