1£®I have seen the film that/which they're talking about.

2£®Do you know the man who/that spoke to the headmaster just now?

3£®The girl whose father is a Chinese is from America.

4£®Last week Mary wore the dress that/which I gave to her.

5£®My grandparents live in a house which/that is more than 100 years old.

6£®Anyone who/that failed to come to the meeting yesterday must give his reason.

7£®All that we need is enough rest after long hours' work.

8£®The book was written by Mark Twain who was a famous American writer.

9£®The novel, which I read last night, is very interesting.

10£®This is the most beautiful park that I have visited.