Giúp mik bài này với ạ! Mik đang cần gấp trong tối nay! Mik vote 5* và câu TLHN ạ! Cảm ơn mọi người! Phân biệt các chất khí sau: a) Không khí, H2,SO2,CO2. b) NH3, H2S, CH4, O2. c) CO2, H2, N2, CO.

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.