托业考试

根据网考网考试中心的统计分析，以下试题在2018/2/5日托业考试习题练习中，答错率较高，为：94%
【单选题】The tour guide gave members of the group a chance to explore the ancient castle on ______.

• (A) theirs
• (B) them
• (C) themselves
• (D) their own