Though suffering constant noise from the outside world, little Tommy was still working with all his attention _____ on his unfinished warship model.
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.
Poor boy! His looks and hands suggested he was very afraid.