Câu 35 : Biết hệ phương trình $\left \{ {{2x + by = a} \atop{bx + ay =5}} \right.$ có nghiệm (x;y) = (1;3). Giá trị của 10(a+b) là : A.15 B.16 C.14 D.10 Câu 36 : Biết hệ phương trình $\left \{ {{2x+by=a} \atop {bx+ay=4}} \right.$ có nghiệm (x;y) = (1;1). Giá trị của a ² + b ² là? A.8 B.7 C.10 D.4

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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.