单选题 "In the past we were a lonely car maker, but we had good business," says Bernd Engelstadter, technical executive director at Shanghai Volkswagen, adding (to) he arrived in China seven years ago "competition was not a problem".无
【正确答案】 C
【答案解析】adding...这部分在句中是现在分词短语做伴随状语， 而伴随状语从句中又带一个复合句表示： 当他七年前到中国时“竞争不是个问题”， 因此adding后应是一个that引导的从句，在这一从句中的时间状语应用when来连接； 因此C为答案。