... kind of you D. How can I help you? 5. The children are old enough………after themselves.A. look B.looks C.looking D.to look6. They ……… a holiday for ten years.A. haven’t had B. didn’t had C. ... on D. to15. My younger brother…………………….stamps for 5 years. A. collects B. has collected C. have collected D. collected16. English is…………………….Japanese. A. same B the same C. different from ... is not working 18. He is not ………… to join the army. A. old enough B. older enough C. enough old D.more old enough19. They haven’t worked in that factory …………. last Monday.A. for B. in C. at...