lts necessary to还是for

lts necessary to还是 for lts necessary to还是for Necessary+for还是to? lts necessary to study geography at school necessary 后面是跟to 还是for? be necessary for和 be necessary to的区别 be necessary for和be necessary to 有何区别 It is necessary for sb to I think it necessary to do sth.还是 I think it is necessary to it is necessary for me to take a taxi中用动词来代替it is necessary 英语翻译It's necessary for us to have a meeting. Is it necessary for sb to do sth 同义句