The way we work has been changing. Most of 21.______change results from new technology. Even the washing-machine repairman 22.______ a small computer to print your invoice.
To be successful, we must be able to sell 23.______.In addition, a new attitude to working hours is more important 24.______ ever. That is already clear to anyone 25.______ does not work from 9 to 5 every day, including people working part-time, workers on short contracts, and almost anyone running his 26.______ her own business.
Part-time work is increasingly popular. There 27.______ about 6.5 million part-timers in Britain. 28.______ parents find that such an arrangement is a solution to the problems of 29.______ after children. In companies where work is mainly done 30.______ the phone and with computers, part-time work is now quite common.
请回答第（21）空
A.this B.that C.these正确答案A
