If...

1.

i will be happy if i can go around the world with my best friends

i would be happy if i could go around the  world with my best friends

i would have been happy if i could have gone around the world with my best friends

2.family

i will be happy if i can be an ambasador

i would be happy if i could be an ambasador

i would have been happy if i could have been an ambasador

3. 

i will be happy if  my family let me go to beijing with my best friends

i would be happy if my family let me go to beijing with my best friends

i would have been happy if my  family have let me go to beijing with my best friends

4.

i will be happy if i have a lot of happy

i would be happy if i had a lot of money

i would have been happy if i have had a lot of money

5.

i will be happy if i can use motorcycle to school

i would be happy if i could use motorcycle to school

i would have been happy if i could have used motorcycle to school

6.

i will be happy if i can spend my time at home

i would be happy if i could spend my time at home

i would have been happy if i could have spent my time at home

7.

i will be happy if i can play badminton with my friends

i would be happy if i could play badminton with my friends

i would have been happy if i could have played badminton with my friends

8.

i will be happy if i can reach all my dreams

i would be happy if i could reach all my dreams

i would have been happy if i could have reached all my dreams

9.

i will be happy if i have new bike

i would be happy if i had new bike

i would have been happy if i have had new bike

10.

i will be happy if i have good voice

i would be happy if i had good voice

i would have been happy if i have had good voice