---I was riding along the street and all of a sudden, a car cut in and knocked me down. ---You can never be careful in the street.
If I can help_______, I don't like working late into the night.
_______ is our belief that improvements in health care will lead to a stronger, more prosperous economy.
I’d appreciate ____ if you would like to teach me how to use the computer.
As the busiest woman in Norton,she made_________her duty to look after all the other people’s affairs in that town.
The chairman thought necessary to invite Professor Smith to speak at the meeting .