JULIE'S WORK:

I make a trouble.         [NO CORRECTION]  ^-^
You must tell truth.     [NO CORRECTION]  ^-^
It's effects.
Please recommend me. [NO CORRECTION] ^-^

CORRECTION:
- These are the effects.

EXPLANATION:
1. Study subject verb agreement. If you use It is it is understandable that the subject on your sentence is singular. Therefore, your verb should be singular s well. But on this case it is not a complete sentence because the word effects is used as a noun.

Hi Julie!
Thank you for sending me your homework! I'm looking forward that next time you send me your homework it will have a perfect score. See you again Julie next week and Enjoy your long weekend!
-Teacher Joanna