She will tell us that each of us has a role ______ in making the earth a better place to live.
After a whole day’s heavy work ,the old worker returned home ,______________________.
--- Do you think our volleyball players played very well in yesterday’s match? --- ____. They couldn’t have done better.
The boss asked him to leave; _____, he was fired.
Computers should be made readily ________to teachers and pupils.
You should remember that the harder you work, __________.