Mistakes don’t just happen; they occur for a reason. Find out the reason, and then making the mistake becomes _______.
| A．favourable | B．previous |
| C．essential | D．worthwhile |
It's everyone's desire that every effort ___ to realize the China Dream.
| A．was made | B．be made |
| C．will be made | D．would be made |
At first the officer ______ to make a statement, but later she agreed.
| A．reduced | B．postponed |
| C．declined | D．voted |
All Mrs Smith's efforts to tidy the room were _____ because her grandson soon made a mess of it again.
| A．at all costs | B．at random |
| C．in vain | D．in return |
___ is left over may be put into the refrigerator, ____ it will keep for two or three weeks.
| A．Whoever; when | B．Whenever; which |
| C．Whatever; where | D．Whichever; while |
Modern science has given clear evidence ____ smoking can lead to many diseases.
| A．what | B．which | C．that | D．where |