Your pre-printed (with candidate name, candidate number and centre number) multiple-choice answer sheets are sent to you in your pre-exam despatch. Section 4.2 of the Cambridge Handbook has more information about all pre-exam and question paper despatches.
If you do not receive a pre-printed sheet for all your candidates, you should use a supplementary multiple-choice answer sheet for foreign languages (Exam Day – Form 2a) which is available to download from the administrative forms page under 'Exam day'. You must make sure you download and use the correct supplementary multiple-choice answer sheet for a particular syllabus.