Is nessary for the students to use mobile phones?

Is nessary for the students to use mobile phones? it is nessary for me to make a plan 这里填of还是for?my studies before a new term.说出为什么? without passion,people won`t have the motivation or the joy necessary for creastive thinking.在这里necessary是做定语嘛?可以改成定语从句,比如：without passion,people won`t have the motivation or the joy which is nessary for creative Tom is s[ ] for the English I will take my laptop with me to the meeting ___ if nessary if it is necessary 是不是都对的?I will take my laptop with me to the meeting ___ if nessary if it is necessary是不是都对的?为什么? 求大神翻译 ACCA F1里的句子 T Tpersonal data processed dor any purpose or purposes shall not be kept for longer than is nessary for that purpose or those purposes. 求大神翻译 ACCA F1里的句子 T Tpersonal data processed dor any purpose or purposes shall not be kept for longer than is nessary for that purpose or those purposes. the girl is piaying piano for the Thecher's Day 英语翻译What is the corporation’s expenses for the year? That's all the news there is for now.翻译 almost everyone in the USA is s---- for present The mother's love for her child is the greatest in the 一道英语填空,What is the reason for his (s His father’s sudden death. sit down to the table或是sit down for the tableMeal is ready .Let's sit down for the table. What is the for For the Day is what's the Chinese forwhere there is a will,there is a way脑筋急转弯 what's the chinese forWhere there is a will ,there is a way?