He ______ in London for more than ten years, but he has never regretted his final decision to move back to China.

【正确答案】 C

【答案解析】本题容易因for many years误选A。but后的句子用现在完成时，表明“他”现在是在中国，因此在伦敦居住应该是过去的事情，故用过去时，答案为C。