----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.
I can't advise you what to do. You must use your own _____.
-----Did you remember to pay the telephone bill? ------The telephone bill? ______.
There is a 20 minute parking _____ here, so we must get back to the car very quickly.
Radium salts, which have been found to _____ in bones, give rise to cancers of the bone.
It has been laid down that each student must _____ a composition to the teacher once a week.