请帮我解析六年级英语错题
我是小六毕业班的学生,做了很多练习,但是英语错题的错因没找到,请老师们帮我解析一下!（我在括号里填的是错误的）
1.（D）Haveyouhad______lunch?---Yes,Ihad_____gooddinneratmyfriend'shouse,too.
Aa/aByour/aCthe/theD/,/
2.(B)Whereare_________?
A.theofficer'sroomB.theroomoftheofficersCtheofficer'sroomsDtheoffice
3.(A)Hans,withhisclassmates,________basketballeveryday.
A.playB.playsC.isplayingD.areplaying
4.---MayIputthebicyclehere?-----No,you_________(我填的是needn't)
5.（A）-----IamafraidIdon'tknow.
-----_______
A.sorry.B.Thanksalot.C.Thankyouanyway.D.Youarewelcome.
6.(B)______eraseronthedeskisJim's.
A.AB.AnC.TheB.不填
7.(A)______turnisitnow?
A.Who'sB.WhoseC.WhoD.whom
8.(D)bothmysisterandmybrotherare____
A.apoliceB.policemenC.policewomenD.polices
9.(A)----Whatareyourtwoforeignteacher'snationlities?
-----_____.
A.TheyareEnglishesB.TheyareEnglisgC.TheyareEnglandD.TheryareEndlands.
10.(D)Mr.White,withhisfriends,_______onatrip.
A.haveB.hasC.isD.are
11(B).----Showmetheletter,please.
----Whichone?Theone____pencil?
A.inB.withC.byD.on
12.(D)There_____aparents'meetingtomorrowafternoon.
A.areBwillhaveC.isgoingtobeD.isgoingtohave
13.(B)Theteacher,withthestudents,____workonthefarmthisSunday.
A.isgoingtoB.aregoingtoCisDare
14.(B)It'sverynice_____youtohelpme.
A.ofB.forC.toD.with
15.(B)---Haveyouhad____breakfastyet?
---No,notyet.
A.不填B.aC.theDan
16.(B)Whatacoldday!Sam,you'dbetter_____moreclothes.
A.putonB.toputonC.takeoffD.totakeoff
17.(B)Dad,mustIfinishmyhomeworktoday?
No,youneedn't.You_____doittomorrow.
A.needB.mustC.canDwill
18.(B)Thisisyourwatch.______please.
A.PutawayB.putonitC.PutitinD.Putiton
19.(D)Musttheycleantheclassroomnow?
No,they_____
