–Why, David, you look so tired! –Well, I ______ a report for the whole day and I must finish it tomorrow.
Paper produced every year is the world’s production of vehicles.
As far as I’m concerned, education is about learning and the more you learn, .
I remembered having locked the door, but I came back to .
All the staff in our company are considering to the city center for the fashion show.
—How about the book you are reading? —Good indeed. It many problems we have come across in our study.