Once ______, the book will surely attract readers’ attention since it is related to people’s health.
| A．publishing | B．having published |
| C．published | D．to publish |
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 |
Three young men have been arrested because they were caught ___ an old lady last night.
| A．robbed | B．to rob | C．rob | D．robbing |