8. He prided himself on ______ at chess. A. having never beaten B. having been never beaten C. having never been beaten D. never have been beaten这题为什么选C啊?求大神告知
因为有never从未,prided on为什么而自豪,chess是名词,前面要有动词,因为有never从未,所以要选择过去进行时态,所以选c