sắp xếp 1. the water/ If/ polluted/ fish/ is/ will die/ badly . 2. we/ recycled paper/ If/ use/ many/ we/ trees/ save/ will/. 3. from/ vacation/ come/ Nha Trang/ I/ just have/ a/ back/ in. 4. university/ Viet Nam/ the/ was/ Quoc Tu Giam/ first/ in.

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