精选优质文档-倾情为你奉上Lesson 11.If our time_, it will either produce【生产】 some useful and important piece of work.A. was usefully employed B. usefully employsC. is usefully employed D. usefully employed2. Our experience and our capacities enable us to earn money when the proper_ comes.A. operation操作，手术 B. protection保护C. rival竞争者，对手 D. opportunity机会3._ time is convertible【可兑换的，可转换的】 into money. A. There can be no doubt that【毫无疑问】B. It can be n
