Is the most beautiful picture we have (beautiful)1.i'm boy in the world (happy)2.that is in the world(slow)3.that is bike in the shop(good)4. that is bag i have(big)

1)l'm the happiest boy in the world.
2)that is the slowest car in the world.
3) that is the best bike in the shop.
4) that is the biggest bag I have