It is now    1    (easy) to have access to the Internet than before, either by a computer or a smart-phone. As     2     result, many teenagers are spending more and more time     3    (go) online, with both positive and negative    4    (purpose). They can do research for their schoolwork and homework，    5    helps them increase their knowledge and improve their grades.     6    , others who     7    ( addict) to online games waste too much time playing these games.     8    (personal), I think the Internet is     9     useful a tool that the benefits of Internet access are more than the dangers. In a word, we should use the Internet as a better way to improve     10     (we).