_____ Sandy was playing the piano, someone knocked at the door.
[ ]
A: While B: Before C: After D: Until
◎ 答案
查看答案
◎ 解析
查看解析
◎ 知识点
根据n多题专家分析，试题“_____ Sandy was playing the piano, someone knocked at the door.[ ]A: While B: Before C: After D: Until …”主要考查了你对 【从属连词】 等知识点的理解和应用能力。关于这些知识点的“档案”，你可以点击相应的链接进行查看和学习。
◎ 相似题
与“_____ Sandy was playing the piano, someone knocked at the door.[ ]A: While B: Before C: After D: Until ”考查相似的试题有：
