给个例子造句（英语的,很简单）快,我会给100分
例子：I can't remember where I put my envelopes.
(1) I have forgotten where----------------------------------.
(2) I have always wanted to know where----------------------.
(3) He has found out where----------------------------------.
(4) My aunt has seen where----------------------------------.
(5) William has learnt where--------------------------------.
(6) We have understood where--------------------------------.
(7)They have all read where---------------------------------.
(8)Sarah has heard where------------------------------------.