Ребят, с 3 по 7 задание надо, хоть с каким-нибудь помогите

1 youngest 2 lives 3 play 4 began 5 started 6 playing 7 best 8 hasn t  9 's 10 more 1 the usa is bigger than russia 2 computer games are more expensive than board games 3new mobile phones are better than old ones 4 tarantulas are more dangerous than house spiders 5 comedies are funnier than documentaries 6 mp 3 players are smaller than cd players 1 the tallest 2 the most difficult  3 the easiest  4 the worst 5 the cheapest  6 the most exiting  1 When i was 2 i could talk 2 my friends couldn t go to the disco 3 could you speak Eng last year 4 i could ride a bike 2 years ago 5 could you play chess 10 years ago 1 should 2 shouldn t  3 should 4 should 5 shouldn t