单项选择题 With new technology, you don’t need to be at the office to do your job.()
单项选择题 All speakers produce summaries of the sessions they gave. The speakers should write()
单项选择题 SW Company 1998 1999 2000 Sales: Profits: Workers: $20million $4million 12,200 $20million $2.5million 12,000 $18million $2.7million 12,500()