7. I am very short. I can not play volleyball.

If I were not very short, I could play volleyball.

 Were I not very short, I could play volleyball.

8. I can not have that good job. I  do not speak English well.

 If I spoke  English well, I could have that good job. 

Were I speak English well, I could have that good job. 

9. Harry is not handsome. She leaves him alone.

If Harry were  handsome, she would not leave him alone.

 Were Harry handsome, she would not leave him alone.

10. If you were to live on the moon, you would be lonely.

Were you  to live on the moon, you would be lonely.

11. Supposed that she had a lot of dollas, she would be very hot-faced.

Were she to have a lot of dollas, she would be very hot-faced.

12. Imagine that I  were Mr. Trump, I would help Viet Nam get rid of China from Indochina Sea.

Were I Mr. Trump, I would help Viet Nam get rid of China from Indochina Sea.