Ex 6: 1, Have/ finished 2, Did/ see 3, have never done 4, Have/ ever broken 5, Did/ play 6, Have/ ever eaten 7, Have/ posted 8, did/ learn Ex 7: 1, started 2, worked 3, spent 4, did/ get 5, studied? 6, had 7, helped 8, was 9, did/ join 10, have/ done 11, signed up 12, haven't got 13, cycle
6. 1, Have you finish 5, Did you play 2, Did you see 6, Have you ever eat 3, I have never do 7, Have you posted 4, Have you ever broken 8, What did you learn 7. Mk vẫn chưa hiểu lắm đề bài bài này.
