可以告诉我months,years,ages,前面用for还是since?

可以告诉我months,years,ages,前面用for还是since? He liccupped for 69 years and 5 months.(对for 69 years and 5 months提问) 酮基有还原性吗?它能被Ag+氧化吗?果糖无醛基可以被Ag+氧化吗?可以告诉我为什么果糖可以被Ag(NH3)2OH还原吗? Thank you. at...old中间只能加天和月吗?比如有ten days old,at four months old 但是可以用at ten years old he hiccupped for 69 years and 5 months He hiccuped for 69 years and 5 months months Thanks for your CV. We will contact you within 2 months if your profile fits for the position.可以告诉我这句话的意思吗? He played basketball for 12 years and 5 months.(对划线部分提问）划线部分是for 12 years and 5 months it was eight years ag和that was eight years ago有区别吗? He showed me around the school that we studiedthree years ago?为什么这道题就用that 呢?do you still remember the chicken farm where we visited three months ago?这道题就用where 呢?希望大家可以帮帮我 ag. 英语翻译a.six months of training b.six- months training c.six months training d.six- month of 告诉我为什麽以及思路 This____girl is so lovely.A.four years old B.four-years-girl C.four-year-old D.six-months-old He hiccupped for 69 years and 5months 提问 for 69 years and 5months____ ____ ____ he ____? Ben lived in Nantong ( ) tow months three years ago.A.at B.in C.for You say three years,never to this three months,don't say you don't wait. There are twelve months in a years.就划线部分提问!