It took a great deal of courage to admit that all their efforts had been ________.
Firms that use computers have found that the number of staff _____ is needed for quality control can be greatly reduced.
_____ and caught the mouse.
The old couple will never _____ the loss of their son.
Sherry is in good shape physically _____ she doesn’t do enough sports.
All the workers are working hard to create _____ we hope will be the best means of transport in the 21st century.