They have no idea at all ( ).
(A)where he has gone
(B)where did he go
(C)which place has he gone
(D)where has he gone
One of the men held the view ( ) the book said was right.
(A)that what
(B)what that
(C)that
(D)whether
It never occurred to me ( ) you could succeed in persuading him to change his mind.
(A)which
(B)what
(C)that
(D)if