they are waiting for you为什么加ing

they are waiting for you为什么加ing who are you waiting waiting for 有for么 为什么 are you waiting for something and what are they? They are waiting for you at the library是什么意思 这里为什么要加ing?Are they good at helping you? are you waiting for the bus为什么用for They are watching TV watch为什么要加ing what are you waiting for? 1.waiting for your emerging 这句中的emerge为什么要加ing?After playing the car stands waiting for the green light.wait为什么加ing ,如果是现 what are you waiting for 和 what are they wait 哪个对? they are --- a bus now A waiting for B waiting