8c add the suitable prefix to the adjective (im, un, dis)

1- Mohammad was very (a)   when he broke his toy plan. (HAPPY)

2- Before the Wright brothers invented the plane. many people thought flying was ( POSSIBLE)

(a)  

3- Your desk is so (a)   . How do you find anything?

(ORGANIZED)

4- I never manage to sleep on planes. the seats are so (COMFORTABLE)

(a)  

5- I tried to make a model plane. but I was (a)   it didn't look like a plane at all. ( SUCCESSFUL)

6- flying makes me really nervous. people tell me how safe it is . but I find their advice ( HELPFUL)

(a)  

7- the way that man told you to move your bags was very (a)   he should apologize. ( POLITE)