问题
单项选择题
—How many cakes can I have, Mom
—None, dear. They () for your father.
A．prepare
B．prepared
C．have prepared
D．were prepared
答案
参考答案：D
解析：
they指代的是cakes，蛋糕是被准备，故用被动语态。只有D项是被动语态，为最佳选项。故选D。
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