verb
Sharpen is used with these nouns as the subject: ↑ eye
Sharpen is used with these nouns as the object: ↑ axe , ↑ blade , ↑ claw , ↑ edge , ↑ focus , ↑ knife , ↑ pencil , ↑ reflex , ↑ sense , ↑ skill , ↑ tool , ↑ vision , ↑ wit
verb
Sharpen is used with these nouns as the subject: ↑ eye
Sharpen is used with these nouns as the object: ↑ axe , ↑ blade , ↑ claw , ↑ edge , ↑ focus , ↑ knife , ↑ pencil , ↑ reflex , ↑ sense , ↑ skill , ↑ tool , ↑ vision , ↑ wit
Oxford Collocations English Dictionary. Оксфордский английский словарь словосочетаний . 2012