Cho các phản ứng : A + HCl --> B + D + H2O D + E --> M +G M + H2O --> E + X +Y - Xác định công thức hóa học của A , B , D , E , M , G , X , Y . Viết các phương trình hóa học.

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.