问题描述：
关于looking forward
the day she was looking forward_______at last.
a.to come b,to came c,to coming d,came
选什么,为什么,请详解,
the day she was looking forward_______at last.
a.to come b,to came c,to coming d,came
选什么,为什么,请详解,
问题解答：
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