单项选择题
A. had been crossed off B. was crossing off C. has been crossed off D. has been crossing off
A. Employer and employee. B. Teacher and student. C. Seller and customer. D. Interviewer and interviewee.
A. Alison fell in love with Jim. B. Jim fell in love with Alison. C. Jim wasted a lost of time. D. Jim wasted a lot of energy.