1. to visit => visiting

2. helping => to help

3/ to => of

4. cost => costs

5. for => of

6. going => to go

7. interesting => interested

8. knew => have known

9. thousand => thousands

10. ten-floors=> ten-floor

VIII

1. more

2. on

3. there

4. so

5. can

6. in

7. others

8. has

9. be

10. where

VI

1. to visit-> visiting/ spend... Ving

2. helping-> to help/ Would you like to V?

3. to -> of

4. how much-> how much does

5. for-> of

6. going-> to go/ It take sb+ktg+ to V

7. interting-> interested in: thích

8. knew-> have known/ Htht

9. thousand-> thousands

10. ten-floors-> ten-floor

VIII

1. more

2. for

3. there

4. so

5. can

6. in

7. 

8. has

9. be

10. where