问题
选择题
–What did you find in the zoo?
–The animals _______ in tiny cages and they could hardly move at all.
A．keep
B．kept
C．were kept
D．were keeping
答案
答案：C
本句的含义为动物们被关在极小的笼子里，表示被动的意思，使用被动结构be+过去分词，故本题选C。
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