______ you make a promise, you should keep it.
| A．The moment | B．While | C．Once | D．As if |
Unfortunately, some natural signs which might have helped more people survive the earthquake were ________.
| A．abandoned | B．ignored |
| C．deserted | D．rejected |
. ___________ the extreme levels of air pollution, city authorities have started to take measures to quickly reduce pollution levels and protect city dwellers.
| A．In spite of | B．As well as |
| C．In response to | D．By means of |
Whenever I read the old letters, _____ was fairly often, sweet memories warmed my heart.
| A．who | B．which | C．when | D．that |
An expert says, “ I think it is unpredictable for nature. You don’t know what will happen but _________we are preparing.”
| A．somehow | B．somewhat | C．anyhow | D．someway |
When the young man was shown the evidence, he ______ and told everything he had done to the police.
| A．broke up | B．broke away |
| C．broke off | D．broke down |