___in the regulations that you should not tell other people the password of your e-mail accountA.what is required B.what requires C.it is required D.it requires为什么选C啊?帮助下那这句话怎么翻译呢

regulation we ___in the neighborhood the European Reach Regulation 是什么 My aunt ___in the hospital Please describe the regulation of Trp operon. 如何翻译“The Parts Quality Inspection Regulation”, there is nothing ___in the fridge.(leave) i find him ___in the garden She ___in the hospital yesterday afternoon.(be) business lawEU LAW,the difference between directive and regulation? The Changjiang River is one of ___in the world we catch the enemy general ___in the battlealivelivelivelyliving EMAS Regulation External Regulation、 Introjected Regulation、 Identified Regulation、 Integrated Regulation什么意思 regulation是什么意思 regulation是什么意思 英语翻译India has ___ ___ ___ ___in the world. What's the 100 -meter race ___in our school?