he start studaying（）the soil was made ofA.all B.which C.what D.which thing求详细解释,本人不胜感激～～～～～～～～～～～

he start studaying（）the soil was made ofA.all B.which C.what D.which thing求详细解释,本人不胜感激～～～～～～～～～～～ HE START .START加不加S 英语翻译he knows（中间填两个单词）start 英语：He told me （ ）.需要理由A.how would we start B.when would we start C.if would we startD.wether would we start start in与start on的区别同上比如这题，He（ ）（ ）doing his homework。。。。。，填哪个 He didn't know when he would start.(改为同义句） He didn't know （ ） （ ）（ ） let’s （start）,为什么是start不是to start 完成句子： He___________(开始集邮）when he was ten years old.(start) before he can even start cutting是什么意思 he got off to a poor start start start , start start start start start He asked me___early.A.whether to start B.whether starting C.whether we start D.if to start