сделайте пожалуйста 20 и 21 задание, безотлагательно! 11;

20) 
1.Most football coaches haven't played football professionally.
2.How many cards have you collected?
3.The girls  hasn't done a judo before
4.Don't worry, the match hasn't started
5.Yes, we've walked 15 km before.
6.Have you red that book?
21)
1.never
2.been
3.been
4.ever
5.gone
6.ever