To understand; comprehend:
Check means to test, examine, compare or inspect something to see if it is as it should be.
Control is defined as to command, restrain, or manage.
To inform positively, as to remove doubt:
Find another word for see-to-it. In this page you can discover 7 synonyms, antonyms, idiomatic expressions, and related words for see-to-it, like: see, check, insure, ensure, control, ascertain and assure.