Complete the sentences using 'who' or 'which'.

1. I am sure you know the boy **who** is giving a speech now. 2. In 2013 Liz met an architect **who** is very famous now. 3. The zoo **which** is in London is very popular with tourists. 4. There are some people **who** don't believe in Santa Claus. 5. Mike remembered some children **who** didn't like to celebrate New Year. 6. Peter doesn't know the people **who** came to the office yesterday. 7. I hope you like the gift **which** I sent you last week. 8. Last year Don met the artist **who** draws wonderful cards. 9. Mike will give me the money **which** I need. 10. The pumpkin **which** I bought yesterday was very tasty.