Помогите решить дам много балов)решите 4пж

2 Will you go to the party witch which will be at our school during the holidays?
3 I want to watch the film that you saw.
4 Had you read the advertisement which invites you to take part in the language competition?  
5 Do you know the student which won the first prize in the competition? 
6 Do you there are such people who can speak more than fore languages?