1.Have you ever dreamed of playing in front of thousands of people at a concert,at which everyone is clapping and appreciating your music?
答案:at which everyone is clapping and appreciating your music
2.They may start as a group of high-school students,for whom practising their music in someone’s house is the first step to fame.
答案:for whom practising their music in someone’s house is the first step to fame
3.Later they may give performances in pubs or clubs,for which they are paid in cash.
答案:for which they are paid in cash
4.The house in front of which there is a big tree was built more than 1,000 years ago.
答案:in front of which there is a big tree
5.Air,without which man can’t live,is really important.
答案:without which man can’t live
