revoke对应

A.to annul or cancel an act， particularly a statement， document or promise， as if it no longer existed.Thus， a person can revoke a will or revoke an offer to enter into a contract， and a government agency can revoke a license.

B.referring to a statute， contract， ruling or anything which is null and of no effect.

C.1） n.a voluntary agreement to another's proposition.2） v.to voluntarily agree to an act or proposal of another， which may range from contracts to sexual relations.

D.being able to perform any gainful employment

正确答案：to annul or cancel an act， particularly a statement， document or promise， as if it no longer existed.Thus， a person can revoke a will or revoke an offer to enter into a contract， and a government agency can revoke a license.