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ことにする， 事にする
1. to decide to
2. to pretend that
3. to make a practice of doing, to make it a rule to
决定；假装；养成习惯，将其作为规则
する， 為る
1. to do, to carry out, to perform
2. to cause to become, to make (into), to turn (into)
3. to serve as, to act as, to work as
4. to wear (clothes, a facial expression, etc.)
5. to judge as being, to view as being, to think of as, to treat as, to use...
做，作，干，执行