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By the time he arrives in Beijing, we ______ here for two days.

A．will have stayedB．will be staying
C．have been stayingD．have stayed

A

解析試題分析：考查時態(tài)：句意：在他到北京的時候為止，我們已經呆在這兒兩天了。說明我們在這兒待兩天是在他到這兒之前，用過去完成時。還有介詞by，是和相應的完成式連用的，by接過去時間，用過去完成時，by接將來時間，用將來完成時。選A。
考點：考查時態(tài)
點評：時態(tài)題的考查關鍵是抓住句子的上下文含義和句中的時間狀語。要根據時間狀語來選擇合適的時態(tài)，在平時的學習中要注意積累有關時態(tài)的用法和各種時態(tài)的特殊之處。如介詞by經常與相應的完成時連用。

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