问题描述:
i've____a fund-raising event called Oxfam Trailwaker,i'm____ jioning it.
heard from;thinking of / heard about;thinking of
heard about;thinking over/ been heard;thinking about 怎么填.
heard from;thinking of / heard about;thinking of
heard about;thinking over/ been heard;thinking about 怎么填.
问题解答:
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