CÓ GIẢI THÍCH LÝ DO Cho sơ đồ phản ứng: X + HCl → Y + H20 Y + NaOH → Z ↓ + NaCl Z + HCl → Y+ H2O X là: A. Fe B. Fe2O3 C. Na2O D. MgSO4

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.