A．在接受任命时有辱使命是对别人的不尊重。 B．不能准时赴约是对他人不尊重的表现。 C．不能如期接受任命表现了对别人的不尊重。 D．未能如期保持原来的约会安排是对他人的不尊重。
单项选择题She found the job very tough.（）she stayed at the company and was finally promoted.
A. And B. Although C. However D. Until
单项选择题Professor Liu（）for 20 years by the end of next summer.
A. has taught B. will be teaching C. has been teaching D. will have taught
