Is it necessary to complete the design before the National D

Is it necessary to complete the design before the National D Is this necessary to complete the design before the National Is （ ）necessary to complete the design before the National D necesery to complete the design before National day? 英语翻译Before the merger & purchase,it is necessary to evaluate It's not necessary ____ the same.A、be B、is C、 to be D、being It is necessary for you to finish the work today 求批改Is It necessary to study the creative art? 英语翻译When it is necessary to communicate with the specificati It is necessary to protect trees from the frost. 英语语法选择题1道It is necessary that the plan ____ before Thursday. It is necessary that he start training before the show.start