问题描述：
Li Wei talked to Erik about his trip ＿＿China.
Li Wei talked to Erik about his trip ＿＿China.
A.in
B.at
C.to
D.from
Li Wei talked to Erik about his trip ＿＿China.
A.in
B.at
C.to
D.from
问题解答：
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