问题
选择题
There _____ many animals in that zoo.
A．used to
B．used
C．used to have
D．used to be
答案
答案：D
在there be 句型中表示过去常常有，应该为there used to be ，故选D
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There _____ many animals in that zoo.
A．used to
B．used
C．used to have
D．used to be
答案：D
在there be 句型中表示过去常常有，应该为there used to be ，故选D