能不能解释英语句It is necessary that be sent there at once.中BE的用法.

能不能解释英语句It is necessary that be sent there at once.中BE的用法. It is necessary that the problem be settled at once. my ,is,suggestion,that ,we,sent,be,to,hospital,once,at连词成句 They requested that the medicine be sent to them at once.翻译句 19.It is necessary that the problem ( ) at once. It was necessary that the application form (be sent) back be 1、It is advisable that he _______________ (be) sent there im don't you think it necessary that he not be sent to Miami bu be necessary for的用法 It is required that the project should be finished at once she is ill.She ()to hospital at once.A.is sent B.must be sen it is necessary that the meeting begin at once.翻译并说明begin这个时