IT'S summer break, time to push aside your textbooks and read something just for fun, or for your personal interest. You might soon find yourself holding your breath as you turn the pages of a fast-paced thriller, or browsing the latest chick-lit on your new e-reader. For those of you who are up to the challenge of trying some leisure reading in English, but have no idea of what to choose from among the thousands of options, 21st Century offers this summer reading supplement to help you out.