3 Complete the sentences with who, which or that. 1 I enjoy watching films __________ make you think. 2 Dynamics is a music festival __________ happens every year in the summer. 3 I don't like people __________ are rude. 4 Yesterday we watched a programme __________ was about a music festival. 5 I'm reading a book __________ is over 500 pages long. 6 Do you know the boy __________ is talking to Anna? 7 I want to see the film __________ is on at the cinema this week. 8 I don't understand the homework __________ our teacher gave us yesterday.