Complex sentence should be the answer
I can hello if you give me the choices.
You should not look at a screen for more than an hour.
1.It coulkd ruin your eyes
2.You could read..A screen is not helping your brain
3 You need use your brain! Go outside read a book study or something!
Lack, want, need, require as verbs all stress the absence of something desirable, important, or necessary. Lack means to be without or to have less than a desirable quantity of something: to lack courage, sufficient money, enough
