◎ 题干
The new dictionaries are very useful. They ________ well and ________ already .
A.sell; have been sold out
B.sold; had sold out
C.sell; sell out
D.are sold; have been sold out
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“The new dictionaries are very useful. They ________ well and ________ already .A.sell; have been sold outB.sold; had sold outC.sell; sell outD.are sold; ha…”主要考查了你对  【一般现在时】【将来进行时】【过去完成进行时】【过去将来时的被动语态】  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。