单选题：One Friday, we were packing to leave for a weekend away_____

题目内容：

One Friday, we were packing to leave for a weekend away__________my daughter hearedcries for help. A．after
B．while
C．since
D．when

参考答案：

答案解析：

Experts think that__________recently discovered painting may

Experts think that__________recently discovered painting may be__________Picasso

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