—Did any signs come up before the earthquake?

—Yes. Unusual things all those days. For example, a number of animals got out their homes.

A． happening B． were happening C． has happened D． had happened

 

B

【解析】

試題分析： 句意：--在地震來臨前有什么跡象嗎？--是，不尋常的事情那些天一直在發(fā)生，例如：很多動物會從家里出來。這里的時間狀語是all those days.指的是過去發(fā)生的地震前的一段時間，所以是過去的一段時間一直發(fā)生的事情，所以用過去進行時。選B。

考點：考查時態(tài)

 

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