1. Tim isn't very rich but he always helps the poor.

=> Although Tim isn't very rich ,he always helps the poor .

2 . He last visited back to his hom village five years ago.

=> He hasn't visit back to his home village for five years . 

3 . The girl is very friendly. She lived next door to us.

=> The girl who lived next door to us is very friendly . 

4 . They are going to build a new hospital.

=> A new hospital is going to be built .

5 . “Are you having a wonderful time here?”, the teacher asked me.

=> The teacher asked me if i had a wonderful time there .

6. It/ necessary/ students/ know/ foreign languages/ nowadays. 

=> It will necessary for students can know speak foreign languages nowadays . 

7. I/ used/ fly/ kite/ when/ I/ small/ boy. 

=> I usually flew a kite when I was a small boy .

8. Although / it/ rain/ heavy/ yesterday/ they/ go/ school/on time

=> Although it rained heavily, we went to school on time

1,

⇒ Although Tim isn't very rich ,he always helps the poor.

2,

⇒ He hasn’t  visit back to his home village for five years.

3,

⇒ The girl who lived next door to us is very friendly.

4,

⇒  A new hospital is going to be built.

5,

⇒ The teacher asked me if i had a wonderful time there.