Tom's been to London twice ,_____A.is he B.isn't TomC.has TomD.hasn't he我想是D.但,我最想问的是“Tom's”是什么意思?这一句话,又是什么意思?不是has been to 这个结构吗?Tom's 不是应该解释为【Tom的……】

Tom's been to London twice ,_____A.is he B.isn't TomC.has TomD.hasn't he我想是D.但,我最想问的是“Tom's”是什么意思?这一句话,又是什么意思?不是has been to 这个结构吗?Tom's 不是应该解释为【Tom的……】 Tom’s never been to Beijing before,_______?反义疑问句, Has Tom flown to London last yesr? I have been to London.My cousin hasn't been to London,either.(同意句) Ken has just been to London 就划线部分提问to London.Ken has just been to London 就划线部分提问to London. It's been 2 years ____ I went to London and I've been used to living thereA before B since C after D when请讲解 Tom is go to London.中的 go to London该怎么变? 一、选择.1.Where's TOM? He () London with his sisiter.A.has been to B.has gone to C. comes from D.went to2.Some students () sbsent () school () yesterday.A.are,from B.are,at C.were,from D.were,for3.() you () school yesterday?A.Are,at B.Were, in C when Tom will go to London?为什么错了 Tom asked whether I c( )go to London with him 填空：（ To London?I haven't been to London for years! 问:填空：（ To London?I haven't been to London for years! Ken has just been to London 就划线部分提问to London. 翻译 he has been to london 3 times l have never been to London.改为否定句 the children say that they have never been to london.对（that they have never been to london)提问 Mike has been to London twice.(对twice进行提问) ____ _____ times has Mike been to London? Tom's andJohn's__came to London last week.A.father-in-lawB.fathers-in-lawC.fathers-in-lawsD.father-in-laws希望说明理由!