说明
662
核心问题
It is important that the hotel receptionist ____ that guests are registered correctly. A. make sure B. has made sure C. made sure D. must make sure(全国四级,00.12-41) 为什么答案是 A. 而不是 B?
词典解答
见 essential。
练习题
请做下面的英语试题： It is important that enough money ____ to fund the project. A. be collected B. must be collected C. was collected D. can be collected(全国四级,97.1-45)