1. The last time I saw her was in 2005.
=> I haven't ...........................................
2.He is writing a book on biology.
=>A book on biology ..........................
3."Don't play video games too much, Minh." Mr. Ha said.
=> Mr.Ha asked...............................................
4. Many trees are cut down to make paper.
=> They.......................................
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Sinh Học lớp 12
