( )---- I am terribly busy these days. A. How are you? B. How are things with you, Bill? C. What are you doing? D. How do you do?
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完成拼图验证

按住下方滑块,将拼图拖到缺口处后松开。

拼图背景,将小拼图拖到缺口处
向右拖动滑块