Find past CXC paper questions on the official Caribbean Examinations Council's website. They are called Exemplars, and you can find them in Examinations section of the website.
Locate the main menu on CXC website; click on "Examinations" and scroll down to see the last item on the list to the left. Click on "Exemplars" and read the short paragraph about these. Click on the link "Subjects" in the last sentence. Choose between CAPE or CSEC, and then the particular subject you are interested in on the next page. The page opens with the "Overview" section selected; click on the "Exemplars" tab to see the questions.