Is （ ）necessary to complete the design before the National Day? A this B that C it D he说下原因

The indoor swimming pool seems to be a great deal more luxurious than ( )A is necessary ;B being necessary ;C to be necessary ;D it is necessary It is necessary for us to help each other(同义） _________ __________ ________ _________is necessary for us it is necessary for you to work Is it necessary to learn grammer It is necessary for sb to It is necessary to do 的例句 Love is necessary to...是啥意思? To keep healthy is necessary.(同义句) To master a foreign language is necessary(用it is改句） The indoor swimming pool seems to be a great more luxurious than ____.A is necessary B whom is known c what is known D which is known打错了选项。B being necessary C to be necessary D it is necessary 1.It is necessary（a.you b.to c.harder d.for e.study）2.It is（a.from b.talk to c.people d.to e.interesting）other countries. Is （ ）necessary to complete the design before the National Day? A this B that C it D he说下原因 关于necessary.it is necessary to do sth.it is nec关于necessary. it is necessary to do sth. it is necessary to doing sth. 两者有什么区别?什么时候用to do .什么时候用 to doing?请回答, 英语necessary的问题It is necessary for us to learn.可不可以改成We are necessary to learn 九年级英语上册9. The doctor will stay up all night to do an operation on you __________. A if it necessary B if you are necessary C if necessary D if is necessar is it necessary to tell his father everything?此句用is that necessary I find ( ) him all about it.A.necessary to tell B.that necessary to tell C.necessary it to tell D.it necessary to tell Change is not necessary to life,it is life