HSK C3/W3/V7-9
Correct

充

/ chōng / 
Strokes

Definition

to fill/to satisfy/to fulfill/to act in place of/substitute/sufficient/full

Example

As an Adjective
sufficient; full; ample; abundant
As a Verb
fill; stuff; charge
As a Verb
make up a deficiency
As a Verb
serve/act as
As a Verb
pretend to be; pose as; pass sth off as; pass as/for