past perfect continuous, when do we use the past perfect continuous?, what is the structure?, tell us an example in afirmative., turn again, she had been working in company. ( is it correct or incorrect?), has she been working in company? ( is it correct or incorrect?), they have not been sleeping at nigth ( is it correct or incorrect), say a sentence in negative form., had you been working in company ?.

present perfect continuous

由
打印
嵌入

排行榜

视觉风格

选项

切换模板

恢复自动保存：？