题目
Sally volunteered________ a veterinarian (兽医) to help the sick animals in the zoo.
A．be B．being C．to be D．to being
A．be B．being C．to be D．to being
A.
be
B.
being
C.
to be
D.
to being
知识点：单项选择章节：单项选择
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八年级下英语choicemedium
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