My neighbors have painted their houses, ______, of course, makes my house looks much shabbier than it really is.
【正确答案】 C
【答案解析】解析：本题考查非限制性定语从句。因为前面这句话(邻居刷房子的行为)造成了后面的结果，所以要用非限制性定语从句，只能用which引导，which代指前面整个句子，故答案选C。