Oxit nào sau đây tác dụng với CO2 tạo muối cacbonat? A. BaO B. Fe2O3 C. Al2O3 D. CuO Câu 8. Oxit nào sau đây là oxit bazơ? A. P2O5 B. SO2 C. CaO D. CO

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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.