3道高中英语单选题,求详细解释~~~1.-Yourbook,Tommy?-No,mom,it'smyfriend's.-Remembertoreturmitto_____nameisonit.A.whatB.whichC.whoseD.whosever2.-Danielmusthavelosthisjobinthatunempolmentcrisis,______

　　3道高中英语单选题,求详细解释~~~

　　1.-Yourbook,Tommy?

　　-No,mom,it'smyfriend's.

　　-Remembertoreturmitto_____nameisonit.

　　A.whatB.whichC.whoseD.whosever

　　2.-Danielmusthavelosthisjobinthatunempolmentcrisis,______he?

　　-Idon'tthinkso.YesterdayIsawhimworkingtogetherwithhiscolleagues.

　　A.didn'tB.doesn'tC.mustn'tD.hasn't

　　3._____withthechallengeonhowtolimitthepriceriseofdailynecesslities,thepresentgovernmentmusttakesomemeasuresatonce.

　　A.FacedB.FacesC.FacingD.Toface

　　答案是1.D2.A3.C

　　求详细解释~~谢谢第一题为啥不是C,第二题为啥不是D,以及第三题..越详细越好