Câu 1: Viết các phương trình thực hiện chuyển đổi sau: (ghi điều kiện, nếu có): a) Al AlCl3 Al(OH)3 Al2O3 b) CuO CuCl2 Cu(OH)2 CuSO4 Câu 2: Chất nào sau đây: Na2O, Fe2O3, NO2, CO2, Fe, Al, BaCl2. Tác dụng được với a) dd H2SO4 ; b) dd NaOH ; c) dd AgNO3 ; d) Nước cất

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I think you should buy _____  pack of mineral water instead. And you can also buy _____  snacks such as potato crisps, 3 kilos of mandarins, 2 kilos of apples, 3 bunches of bananas, ______  cookies and soft candies.

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We should decorate our living room with _____ orange banner. We also need ________  ribbons, balloons, party hats and costume.

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I think that ______ cauliflower is not enough for 3 people. Let’s buy one more.