1.cho tam giác DEF vuông tại D có DE = 1cm, DF = căn 3 cm. Trong các khẳng định sau , k/đ nào đúng? a. sin F = 1/2 b. tan F= căn 3 c. sin E = 1/2 d. cos E = căn 3/2 2. Cho tam giác ABC vuông tại A, đường cao AH (H thuộc BC). Biết HB = 3cm, AH= 4cm.Độ dài HC: a.16/3 cm b. 7/3 cm c. 3cm d. 25/3 cm

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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.