Japanese Lesson 20 Exercise II1Question (4) Please help explain it after class. ...

The grammar of this sentence is an adjective ending with "ぃく" and "なる", indicating the change of state.

Ex: It's hot (hot → hot) (hot).

The conjunction of the verb (i.e. "ますすますすすたぃ") indicates the action that the subject wants to take.

Example: Business trip for personal reasons (business trip → travel → travel) (I'm going on a business trip)

なって is the intermediate form of なる, which can be regarded as the て-shaped pause of the verb, that is, the word is not finished.