单选题:Barry had an advantage over his mother __________ he could s 题目分类:专四 题目类型:单选题 号外号外:注册会员即送体验阅读点! 题目内容: Barry had an advantage over his mother __________ he could speak French. A.since that B.in that C.at that D.so that 参考答案: 答案解析: