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[填空题,0.7分] Fill in the blanks with one of the items given below :I had tried to send you a message by E-mail but my computer ______ ______.( breaks, has broken, broke; down , off, out )
出自:当代英语语法概论

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