Hello Rebeca! ^^ Thank you for submitting your homework today. Kindly take note of the corrections that I made. Thank you! ^^

Rebeca: I will work part time job.
Correct: I will work in my part time job.

I will ride a bike with my sister at the riverside road. -Correct

Rebeca: I will go to library to return the borrowed book.
Correct: I will go to the library to return the book that I borrowed.

Rebeca: I will do assignments for get good grade.
Correct: I will do my assignments to get good grades.

Rebeca: I will climb the mountain on holiday with my family.
Correct: I will climb the mountain on holiday with my family.