PL 15 Complete the sentences with the correct 9 where how many how what when 1 It's my friend's party and I don't know to wear 2 My mum and dad are trying to decide to go on holiday what to have the party – 3 Let's talk about to make a W How about next Friday? 4 I'm writing to ask you very important decision in my life. 5 I'm not sure party. I think 20 friends will be enough. people to invite to the 10 o correct ontion.