Some of the employees in the company (allow) ________to work at flexible hours.(2015年12月第25题)
查看答案
The contract won't come into effect until it ( sign )__________by the legal representatives of both parties. (2018年12月第35题)
Training new staff should ( conduct )___________ as soon as possible after they are hired.(2018年6月第31题)
When they entered the area , the visitors ( require )_______________ to turn off their smartphones.(2017年12月第34题)
Our clients (surprise)_____________ by the level of support we can offer in such an efficient way.(2016年12月第32题)