【英语宾语从句,Theythought()toplaysocceragainstawomen'steam.A.itfunB.themfunC.itisfunD.theyarefun正确选项是A但是C为什么错了?难道应该把C选项的is改成was吗?Thereisnodifferencebetweenthetwosweaters,s】

　　英语宾语从句,

　　Theythought()toplaysocceragainstawomen'steam.A.itfunB.themfunC.itisfunD.theyarefun正确选项是A但是C为什么错了?难道应该把C选项的is改成was吗?

　　Thereisnodifferencebetweenthetwosweaters,soIreallydon‘tknwo（）

　　A.tochoosewhichoneB.whichonetochoose正确选项是B,但是A为什么错了,是语法错误还是没有这种说法?如果是语法错误那怎么改才对呢?