Cho dãy các chất sau: CaO, CO2, CO, SO2, SiO2, Al2O3, P2O5, Fe2O3 Những chất tác dụng được với dung dịch nước vôi trong là: A. CO2, SiO2, SO2, P2O5, Al2O3 B. CO2, CO, SO2, P2O5 C. CO2, SO2, P2O5, Al2O3 D. CO, P2O5, CO2, SO2, SiO2

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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.