helppp meeeeeeeeeeeeeeeeeeeeeee

Bài 1:

3. Needn't

4. Must

5. Mustn't 

6. Needn't 

7. Needn't 

8. Must/mustn't 

9. Needn't/must

Bài 2:

2.

--_> She needn't have bought those eggs.

3. 

---> You needn't have shouted at me.

4.

---> He needn't have sold his car.

5.

---> We needn't have brought the camera.

6.

---> I needn't have rushed to the station.