1.-He is eager to try something he has never tired before.-O

1.-He is eager to try something he has never tired before.-Oh,I see.That's___he is different from others.A.when B.where C.how D.what
2.___can take good care of our kids worried.A.Whom B.Who C.Which D.what
3.The fact___man can conquer nature is obvious.A.that B.which C.how D.when
4.The teacher said he would give the prize to did well in composition.Awhomever B.whoever C.who D.anyone