题目

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 答案：A　 解析: “动词＋副词（well，easily，quickly等）”中的动词不必用被动式，这类动词有read，wash，sell，open，shut，clean，bum，pull，draw等。

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