—Didanysignscomeupbeforetheearthquake?—Yes.Unusualthing...

问题详情：

—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

【回答】

B

知识点：过去进行时及其被动式

题型：选择题