The doctor will not permit mother up __________ her leg is better.
Animals suffered at the hands of Man ___ they were destroyed by people to make way for agricultural had to provide food for more people.
We finished the run in less than half the time ____.
——-Shall we go out for a walk?——Sorry. This is not the right ____ to invite me. I am too tired to walk.
It is clear that the whole world is passing through a social revolution in which a central _____ must be taken by scientists and technologists.
The author of the report is well _____ with the problems in the hospital because he has been working there for many years.