Compléter PRO - GRAMMAR 1.1Version en ligne Fill in the gap using the indefinite article "A" or "AN" when necessary. par Excelangues Formation 1 1 . She's excellent pupil . 2 . I have idea ! Why don't we go to the cinema ? 3 . You'd better have good reason for being late ! 4 . I'm computer engineer . 5 . They sold 100 products week . 6 . He's English scientist . 7 . You can get up - to - date information at the touch of button . 8 . I'm going to send email to African orphan . 9 . We usually send ten messages day . 10 . Our group wants to produce play .