Interested in Language
1.To relax from time to time is important____ A to us B. for us
2.Mobile phones can take pictures ___a camera. A like B as
The answers are A, why?
You could also say, "It is important for me to relax from time to time". ("for"-structures with preparatory "it")
(2) both are correct. However, grammars say that "like" is a preposition while "as" is a conjunction (as + clause or preposition phrase). So, you should say, "Mobile phones can take pictures like a camera" (like + noun or pronoun).
In informal English (maybe mostly American English), "like" is often used as a conjunction instead of "as": "Nobody knows her like I do / like me / as I do."