What are they talking about?中什么是主语

初二宾语从句练习（既要答案,也要选择这个答案的原因）1、The children said( )they( )themselves very much.A.if...enjoy B.why...enjoyed C.that...enjoyed2、Who can tell us( )about over there?A.what the talk B.what they are talkin what are they What are they? What are they doing? what are they doing? what nice they are What are they What are they? What are they? What islands are they? what are they! what great they are! what are they are pens what colour are they可以变成what are they colour? What colours are they?与 What colour are they? What are they( )(do)now What are they talking about? what are they doing?急用!