It's necessary ____ us____ good grades.A for get B to getting C for to go D with to get

it's necessary是什么意思 I find it necessary to know more about other countriesit necessary 不应该是it's necessary. It's a long way,so ____ is necessary ____ you to take enough water.A.it,ofB.this,forC.that,ofD.it for 请务必保证你们自已的安全,这很必要.It's necessary to ____ _____to _____ yourselves ______.请务必保证你们自已的安全,这很必要.It's necessary to ____ _____to _____ yourselves ______. It's necessary to learn English well. 翻译it's not necessary to hurry It's necessary这是什么形式? It's not necessary _________________(相同的) It's ____ of you to help me solve the problem.A.important B.necessary C.impossible It's not necessary ____ the same.A、be B、is C、 to be D、being选什么?Why? it's necessary for you to give up smoking(保持句子原意) it's necessary ____you____smoke Don't be afraid ____(ask) for help. The boy is ____ in this ____book.(interest)It's necessary for us __(keep) heathy realise it necessary还是realise It's necessary可以邦我讲讲么 It's necessary（ ）protect wild animalsIt's necessary（ ）protect wild animals. make a plan of和make a plan for的区别It's necessary for me to make a plan ____ my studies before a new term. It's necessary ____ us____ good grades.A for get B to getting C for to go D with to get It's ____ today. i think it's necessary to be friendly to others 的necessary用什么形式