【简答题】This is because so many people in poor countries do not contribute much to the formal economy. To put it even more crudely, where there is a huge oversupply of unskilled labour, the dead can easily be...
【简答题】一般过去时和现在完成时 1.---Where___ you ___(put) the book? I can’t see it anywhere. ---I ___ (put) it right here. But now it’s gone. A. did you; put B. do you; put C. have put; put D. did you; putted 2. I...