giúp e với :(( : Ss1 khái niệm về biểu thức đại số bài 2: Nam mua 25 quả táo giá x đồng, và mua 11 quả cam mỗi quả giá y đồng. Hỏi Nam phải trả bao nhiêu tiền ?

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1. I (go)to HCM city last summer vacation. 2. He (buy) a lot of different gifts for his friends yesterday. 3. I (see) a lot of fish at Tri Nguyen Aquarium last week. 4. She (receive) a lot of presents on her birthday one year ago. 5. They (return ) to America for a short last month. 6. I (remember) your trip to Nha Trang two years ago. 7. Ba (wear) the cap all day yesterday. 8. I (eat) a lot of fish yesterday. 9. Her aunt (take) her to see Cham Temple last year. Tuan (have) a new bike yesterday . 10. She (not buy) a new ruler yesterday 11. He (not talk) with his parents about his vacation in Da Lat last year. 12. They (not come) school yesterday . 13. The windows (not close) yesterday. 14. We (not return) at home at 7 pm last Monday. She (not eat ) fish and crab yesterday. 15. Lan (not go ) Ho Chi Minh city two years ago. My parents (not take) to Vung Tau last week. 16. We (not have)a lot of friends in Ha Noi. didn’t have 17. Lan and Hoa (be) your school two years ago? Were Lan and Hoa 18. What they (play) last week? Did they play 19. What Hoa (try) on yesterday? Did Hoa try 20. Who (talk) to about the film on TV last Monday? Where they (stop) on their way back last Sunday? What the student (wear) at school two years ago? 21. Where you (put) the cake yesterday? 22. What time you (leave )home for school yesterday? 23. What Ba(receive)from Liz last week? 24. How long he (do)this hat yesterday? 25. What time you (go)to bed last night? 26. You (go) to Dalat for last Tet vacation? 27. He (have) a lot of friends in Ho Chi Minh city 3 years ago? 28. His uncle (take) him to see Tri Nguyen aquarium last week? Liz (buy) a lot of souvenirs yesterday? 29. They (put) the fish in the big bag last Sunday? They (eat) meat in her meals in Vung Tau yesterday? 30. I(wear) the cap with a dolphin om it yesterday. 31. Liz (teach) Ba some English last week. Ba and Tan (remember) their trip to Nha Trang last month? Did Ba and Tan remember 32. Nam (return) to Ha Noi last week? Did Nam return