Wordnet 3.0
VERB (1)
1. 
 be careful or certain to do something; 
 make certain of something; 
- Example: "He verified that the valves were closed"- Example: "See that the curtains are closed"- Example: "control the quality of the product"[syn: see, check, insure, see to it, ensure, control, ascertain, assure]
WordNet (r) 3.0 (2006):
see to it
    v 1: be careful or certain to do something; make certain of
         something; "He verified that the valves were closed"; "See
         that the curtains are closed"; "control the quality of the
         product" [syn: see, check, insure, see to it,
         ensure, control, ascertain, assure]