一些英语语法问题,请告知答案并给出选择理由,谢谢.

1.seventywomandoctors还是seventywomendoctors?为什么?

2.Ihadmyhaircutatthe____inourhospital

A.barberB.barbersC.barber'sD.barbers'

3."Doyouwantthepants?""Mypants_____laidinbed."

A.isB.wasC.areD.being

4.Idon'twanttoborrowKent'sbigbicyclebecauseIamtoosmalltoride____

A.thatbicycleofhimB.thatbicycleofhisC.thathisbicycleD.histhatbicycle

5.AfterfouryearsinAmerican,hegot_____

A.adegreeofdoctorB.adoctor'sdegreeC.thedegreeofadoctorD.adoctordegree

6.herhouseiswithin_____fromthepolicestation.

A.astone'sthrowB.athrowofastoneC.stone'sthrowD.thestone'sthrow

7._____isreallyaburdentoasmallboy.

A.Tenpounds'weightB.TenpoundsweightC.TenpoundweightsD.Tenpoundweight

8."Haveyouevergonewater-skattingbefore?""Oh,yes__"

A.adozenoftimeB.dozensoftimesC.dozensoftimeD.dozenoftime

9.iwassurprisedtosee_____attheconcert.

A.thosenumberofpeopleB.thatamountofpeopleC.thatnumberofpeopleD.thoseamountofpeople

10.whenyouareatyour_____end,youshouldnotloseyourhead.

A.wit'sB.witC.wit'sD.wit's