その本は暇な時に読めばいいですよ。の英語

What is necessary is just to read the book, when free.

Read this book at your leisure.

Read this book when you have time.

It is waste of time to read such books

It is not worth while to read the book.

You may take the book if you can read it.

You read books fast, don't you?

When you're done with the book, put it back where you found it.

When you have done with the book, put it back where you found it.

Read such books as can benefit you.

Read the kind of books that are useful to you.

Read the kind of books that teach you something.

Read books that are worthwhile.

You ought to read books instead.

It is very important to read books.

There are many interesting books we should read.

You should just read that book.

I think that reading books is important.

Those who have time （to spare） should read the book.

You need a large vocabulary to read that book.

Whatever book you read, read it carefully.

Read whatever books you think proper.

Read this book by all means, only read it carefully.

To read books is important.

It's important to read books.

Reading books is important.

Pick up after you have read the books.

It is important to develop a custom of reading good books through to the end.

It is important to read many books.

It would be better for you to read more books.