1. This substance _______________(反應速度是另外那種物質的三倍).
2. Be quick, _______________(否則等我們到達教堂時婚禮就結束了).
3. The war went on for years, _______________(奪去了成千上萬人的生命).
4. (無論理由是什么),we cannot tolerate this disloyalty.
5. The population of elderly people is increasing rapidly because people are living longer than before___ (發達國家尤為如此).