题目内容
The school rule states that no child shall be,unless________by an adult,allowed out of the school during the day.
| A.was accompanied | B.accompanying |
| C.accompanied | D.being accompanied |
C
答案 C [此处为省略句。accompany与逻辑主语child之间存在被动关系,相当于unless he is accompanied by an adult。]
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