Chuyển từ câu chủ động về câu bị động

1. Times is one of the most popular magazines and is widely read by both teenagers and adults.
-> Both teenagers
2. No one expected that he would be the president of the company.
-> He was
3.The last time I went to the circus was two years old.
-> I haven't
4. The Internet is sometimes dangerous because of viruses.
->because
5. The new radio didn't work, so he took it back to the shop.
-> Because