Choose the underlined part A,B,C or D that needs correcting:
1.Having leisure activities are truly important to the elderly
2.Although she wanted to go to the museum , she decided staying at home
3.Parents are concerned that their kids may be spending too many time on screens
4.Collecting coins is exciting , but it can also be relaxed
5.Clod watching sound weird, but Hang adores it
6.For some young people ,enjoyment involves sitting in front a computer playing games
7.His parents are thinking of banning him on using the computer
8.When you game online, be carefully when making friends with strangers