Câu 11. Dựa theo điều kiện phản ứng trao đổi, hãy chỉ ra PTHH lập sai A. FeCl2 + 2NaOH → Fe(OH)2 +2 NaCl​ B. Ca(OH)2​+ H2SO4 → CaSO4 + 2H2O C. 2HCl + K2SO3 → 2KCl + SO2 + H2O​ D. CuCl2 + K2SO4 → CuSO4 + 2KCl

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.