20 The wind was strong. It blew my hat off my head
→The wind .........was so strong that it blew my hat off my head.
21 Mai is good .She can pass the examination
→Mai is good enough to  pass the examination
22 I own a very small house
I wish........ i owned a very small house
23 She was lazy. She didn't pass the examination
 if she was not lazy, she could pass the examination
24 The tooth is very decayed .It can not be kept
The tooth is too decayed to be kept