Giải các hệ phương trình sau:$\left\{\begin{array}{l}\frac{2x}{x+1}+\frac{y}{y+1}=\sqrt{2}\\ \frac{x}{x+1}+\frac{3y}{y+1}=-1\end{array}\right.$

Viết bài văn nghị luận về tấm gương học tập của Nguyễn Hiền đi ạ:((

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.