There's no doubt that this is not the way ____ I came last time.
by which
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Here is a piece of paper_____(在上面写着那本书的标题)The Arabian Nights.
Hebuiltatelescope____hecouldstudytheskiesinhisfreetime.
Doyouknowthereason____hewaslate?
He borrowed a book the other day ， the author ____ is a worker.
"Look what you've done!You ______more careful."