Because I do not intend, and does not review the book, and on holidays, I helped my mother to work, home and play the computer if I read a book and sent me, it may not be examination.
Because I do not intend, and does not review the book and in the holidays I helped my mother with the housework and playing computer if I read the book and I could not fail to deliver.
Because I didn't study hard and not to review the books and in the holiday, I help mother do housework and play the computer if I read a book and send me may not fail in the exam.