以下是从本单元课文中摘出的原句。试试看，能填上吗？要注意词形变化！

1．________ walking down the hall to chat with co-workers, she emailed them．

2．Heavy traffic, high cost of office space reduced workforce, and lifestyle needs－all these factors ________ the growth of telecommuting．

3．Telecommuting can increase workplace flexibility and ________ productivity．

4．The workers reported that ________ office was not at all productive to their work．

5．________, technological improvements are both important and necessary．

6．Probably, nothing has changed man's life ________ during the last century ________ the discoveries in science．

7．Science has begun to ________ energy crisis by developing new sources of power．

8．In the field of medicine, ________ life-threatening diseases have also prolonged life．

9．During future years, increasing attention must be paid to the moral ________ the practical application of science．

10．Telecommuting also makes many people feel lonely and ________．