They weren’t looking, _______?

Phil works here, _______?

It’s no use persuading him, _______?

‘_________’ means the basic system necessary for a country or organization to run smoothly.

Our assignment this week is a group _________.

A place that is _________ means the place is filled with too many people or things.

The most common _________ sources of energy are the wind and the sun.

Chất nào sau đây là hợp chất hữu cơ 1 điểm A. CaCO3 B. C2H6 C. HCN D. CO2

4 gam C3H4 làm mất màu tối đa m gam Br2. Khối lượng Brom tham gia phản ứng là : (biết MBr = 80)

giúp em ii 🥺