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[填空题,0.7分] Fill in the blanks with the appropriate form of the verb or verb phrase given:It is time we _______________ (stop) this practice.
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