单选题 I know it's not important but I can't help ______ about it.
  • A. except to think
  • B. thinking
  • C. think
  • D. to think
【正确答案】 B
【答案解析】[解析] 此题测试动名词短语的用法。can't help(禁不住)后面用动名词短语。因此，答案是B)。