Is very popular now use it to surf the Internet为什么it后用to

Is very popular now use it to surf the Internet为什么it后用to 单选!_____ great fun it is to surf the internet in our compute But is it good for us to surf the Internet?用法对么? It is ____to surf the Internet. the internet is very useful.we can use it( )english Many youngsters now surf the net because it is the thing to 间接引语（英语）Gas is very popular now.It is used to cook food quic How convenient is it for you to use the Internet on campus? computer are very popular now ,but not ___can use it It's fun ___ the Internet in your spare time?A to surf B sur A video is very popular on the Internet these days. It’s Sou It is no use his___there,the situation is hopeless now A.to