CORRECTION/S:
1. I didn't know where my new class was so I went left and right. (Please always capitalize the "I" in any occasion to refer to yourself. Be consistent with your verb tenses and use the symbol (') when you use an apostrophe.)
2. For ages, I waited for my friends to come. (Please check your spelling for the word "waited" and use a comma (,) after the word "ages."
3. CORRECT
FEEDBACK:
Your sentences are fairly good. Study how to use punctuation marks correctly and read more books to hone your writing skills. Thank you very much, Victoria!