Tom had been expecting to get the job for a long time but unfortunately____him a rejection letterhad reached him.填介词

Tom had always been a student.问what do you think of Tom. Tom got sick last May and has been in bed since then.为什么has been 而不是had been had been Tom has had been working at Ford company from Jan.5,2008 to Feb.1,2009. when Tom arrived,he learned Jane____ for almost an hourA had gone B had set off C had off D had been away应该选哪个答案?为什么? 顺便把语法讲Tom said he____Hangzhou several times.A.has been to B.has gone toC.had been to D.had gone to讲解下 , the meeting ( )when Tom( )to the officeA.has begun;getB.has been on;getC.had begun;gotD.had been on;got选哪个为什么 what had been done had been done. little tom had to stay at home on sunday()()?Mary's never been to america,()() 反义疑问句 Tom said he was innocent and what he said_trueA proved. B was proved. C prove. D had been proved. Tom asked me if I had been to Hong Kong.这里的if可不可以用whether代替 为什么 Tom had been hit on the(his) head with a ball为什么不能用his代替the,求原因, Tom's parents ----[marry]for nearly ten years答案是have been marring 我认为是 had married 请问哪个正确 关于连词成句的一道题Tom as if he acted had been never before here tom got to school,it had been already eleven o'clock2句话能不能连到一起 不用IT I found an aspirin bottle _dropped on the floor of Tom's rooma.was b.had been为什么选b He sent another fax informing Tom that the plan had been called off.请问这里的informing是什么语法现象. 一道英语选择（初三）Peter asked Tom whether the teacher _______ 5 minutes _______.A.has been there;beforeB.had been there;agoC.had been there;before为什么?