Tìm một số biết rằng số đó chia cho 3 rồi cộng với 8 cũng bằng số đó nhân với 3 rồi trừ đi 8.

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I.Change the following sentences of past continuous tense into passive voice. 1.Peter was riding a buffalo in the filed at 4p.m yesterday. A buffalo was 2.They were watching TV when I came. TV was.................................................................................................................. 3.Students were cleaning the school yard very quickly. School yard............................................................................................................ 4.Were you having lunch when she came? Was lunch............................................................................................................... 5. We were not helping the women when it started to rain. When it started to rained, the women...................................................................... 6. I was not teaching English when it started to rain. English wa not........................................................................................................ 7. People were not playing the cello at this time last year. The cello................................................................................................................. 8.He was not using the computer at that time. The computer was...................................................................................................... 9.Duong was doing the projects this time last year. The projects.................................................................................................................. 10. Were people eating black pudding this time ten years ago? Was...............................................................................................................................