*Combine the sentences into a new one using the given words in brackets

*Combine the sentences into a new one using the given words in brackets. Do NOT change the given words in any ways.
21. I want to have more books. I work part-time to earn extra money. (because)
..................................................................................................................................................
22. She was very tired. She could not stand up. (so….that)
..................................................................................................................................................
 
23. I think it’s supposed to rain today. You should bring your umbrella with you. (so)
..................................................................................................................................................
24. When I was a child. We lived in Bristol. (used)
..................................................................................................................................................