John.s father _________ mathematics in this school ever since he graduated from Harvard University.
选择一项：
A. taught
B. teaches
C. has taught
出自：人文英语4

提示：
同一【IP】的非会员用户每天可免费获取10次答案

收藏本站【zk.995w.com】，下次访问不迷路

本站试题总数:【10245188】个 (题库试题定时更新)