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Use "log on" in a sentence
"Sure enough, when she tried to log on to the Waterford College system, his old password failed."
"That way, instead of frantically calling telemarketers all over the country, a campaign manager could simply log on to my site and see at a glance what capacity each vendor had available."
"One mom ended the screaming fights with her son by letting him watch TV or log on to the computer; formerly, both were before-school no-nos."