Are you at work or at

Are you at work or at are you at work You work hard and often successful.you are good at making or pianning things.牛津英语9A的Unit1的reading Are you a new or existing AT&T wireless customer? please becareful when you are A in work B of work C on work D at work为什么？ You must work hard( )English.A.on B.at C.A or B would you like to work at home or in a big company why? ---Are you good _______ running _______swimming ---Swimming.A.at;andB.in;orC.for;orD.at;or work hard at school,or you can't learn well. 英文的关于机会成本的问题1.suppose there are 3 alternatives to attending a social event:read a novel(you value this at 5 dollars),or watch a film(you value this at 10),or go to work(you can earn 7 dollars).The opportunity cost of attending Do you have a pet?Are you i_______ intaking care of animals Girls and boys who like animals may want to study to be anmials doctors.They are often callvets”.Many of them work in animal hospitals.Other may work on farms or at a z_______.Some study Are you here on business or ___ fun A,in B,on C,at D,for 请高手翻译college prepares you for a lifetime of learning in school,at work or out in the world it will be nice to meet for a tea or a work in the afternoon,if you are 1.Don't sit up and work too hard at night or you'll be run_______.1.Don't sit up and work too hard at night or you'll be run___a____.A.apart B.up C.down D.over you work or study? to be at work when you are sick是什么 are you at work now?i am also working是什么意思