1.Withhisworkcompleted,thebusinessmansteppedbacktohisseat,feelingpleased_______hewasamanofaction.
A.whichB.thatC.whatD.whether
2.Thetranditionalviewis______wesleepbecauseourbrainis"programmed"tomakeusdoso.
A.whenB.whyC.whetherD.that
还要详细解析每个选项
选bd
第一个是宾语从句
第二个是表语从句
解释每个选项