单选题：The school rules state that no child shall be allowed out of

题目内容：

The school rules state that no child shall be allowed out of the school during the day, ______ accompanied by an adult. A．once
B．when
C．if
D．unless

参考答案：

答案解析：

What was Mrs. Franks doing when the accident took place?

What was Mrs. Franks doing when the accident took place?A．Walking along Churchil

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Everyyearafloodoffarmersarriveinshenzhenforthemoney——makingjobsthey__________Bef

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