*Rút gọn biểu thức sau: C=(2/ căn x+ căn y + 1/căn x- căn y+ 3 căn x/y-x):2-y/x-y(x>0,y>0,x khác y,x khác 2y)

Choose the best answer.

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.

Choose the best answer.

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

Choose the best answer.

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