单选题 Those interested in participating in any of the volunteer activities ______ to share their time and expertise in a number of areas.
  • A. are inviting
  • B. can invite
  • C. will invite
  • D. are invited
【正确答案】 D
【答案解析】[解析] 语法：被动语态 1．通过选项可以看出空格内应填入一个动词。 2．被动语态be invited意为“被邀请”，因此D为正确选项。