Trong các cặp chất sau đây,cặp chất nào dùng để sản xuất axit sunfuric A:SO2 và H2O B:SO3 và H2O C:NO2 và H2O D:P2O5 và H2O

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.