【正文】
6. give 7. hamburgers 8. help, do 9. to understand, to say 10. rising, walked 。 _______ _______, please. The class begins. 18. 你收到過禮物嗎? Have you _______ _______ _______? 19. 快點(diǎn),不然遲到了。 6. When I _________(give) you a present, you must open it at once. 7. American people eat lots of _________(hamburger) everyday. 8. Can he ________(help) me _________(do) the work?