A little help please.. In Writing

[Vtc2003]

السلام عليكم ورحمة الله وبركاته,, ممكن مساعدة:-

correct the following:-

1- You will not pass this course. Unless you study.

My answer: You will not pass this course unless you study.

2- I am working I am also studying.

My answer: I am working, and also I am studying.

3- The book is boring I have to study it.

My answer: The book is boring. But I have to study it.

4- Because it is hot he is wearing shorts.

My answer: He is wearing shorts because it is hot.

Or I can say: Because it is hot, he is wearing shorts.

مادري صح أجوبتي؟ أو فيه غلط؟