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Thenewdictionariesareveryuseful,andthey

問題詳情:

Thenewdictionariesareveryuseful,andthey

The new dictionaries are very useful, and they __________.

A. sell out               B. had sold out

C. have been sold out     D. sold out

【回答】

C

知識點:動詞時態與語態

題型:選擇題

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