单选题 The first two questions were easy, but the rest of them ______ not.
  • A. was
  • B. were
  • C. being
  • D. to be


【正确答案】 B
【答案解析】本题的要点是half of，the rest of，plenty of修饰可数或不可数名词作主语，谓语动词用单数还是复数，视具体情况而定。如果of后面是不可数名词，谓语用单数，如果of后面是可数名词，则谓语用复数形式。