________， I lost heart in English learning，but my teacher often said to me，“Keep on studying hard，and you’ll succeed________.”
| A．At a time；in time |
| B．At a time；on time |
| C．At one time；in time |
| D．At one time；on time |
Firms that use computers have found that the number of staff _____ is needed for quality control can be greatly reduced.
| A．whose | B．as | C．what | D．that |
_____ and caught the mouse.
| A．Up the cat jumped | B．Up jumped the cat |
| C．The cat up jumped | D．Jumped up the cat |
The old couple will never _____ the loss of their son.
| A．get over | B．get away | C．get off | D．get across |
Sherry is in good shape physically _____ she doesn’t do enough sports.
| A．if | B．even though | C．unless | D．as long as |
All the workers are working hard to create _____ we hope will be the best means of transport in the 21st century.
| A．what | B．where | C．which | D．that |