__________ how to operate a switchboard, I had to ask the office supervisor to show me the correct procedures. A.Not known B.Not to know C.Not knowing D.Having not known

__________ how to operate a switchboard, I had to ask the office supervisor to show me the correct procedures.

A.Not known
B.Not to know
C.Not knowing
D.Having not known

出自：河南财经政法大学-金融学-大学英语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:【10244552】个 (题库试题定时更新)