Complete the following sentences after the model with the word(s) or phrase in brackets. Make changes or additions where necessary.1. We believe that building a powerful navy _____ national defense. (in the interest of)2. He thought the coffee at breakfast was too sweet. It ____ . (to one's liking)3. The new system is said to enable us to use much less oil than before, in other words, to _____ considerably. (increase, efficiency)4. Speaking of the real estate market, when people are losing their jobs, it is almost certain that the house prices _____ . (go down)5. A regional conference on ____ fishery resources will be held in Seoul next week. (conservation)