all beepers and moble phones should be kept off during the meeting.keep

all beepers and moble phones should be kept off during the meeting.keep All the beepers and mobile phones must___ in class.A..keep off B.take off C.be taken off D.be kept off选什么?为什么 All the beepers and mobile phones must ___ in classA.keep off B.take off C.be taken off D.be kept off Grasp all and lose all. Understand all and forgive all all day and night还是all day and all night once and for all and,but,all用法 all trick and no the devil and all and give all you 英语翻译There's no doubt that work has found its way into every hour of our day,thanks to beepers,cell phones and e-mail.In Antarctica,the only mammals are those that stay for just a short time -- marine mammals like whales and seals.Sea birds li 高一英语短文改错(10处)One of the problems with cellphones and beepers are that they can be a major sou rce of distraction(分心).There is nothing bad than someone`s cellphone ringing in middle of something important.And if the people actual all eyes and all ears的意思 all tastes and all pockets是什么意思 marching all day and marching all it goes all day and all all for one and one for all