I just put a range of sentences through the profiler on this website.
The ‘infinitive of purpose’ is A2.
To feel that you‘re special is crucial to develop a sense of security.
The manager gave the staff an extended vacation to test whether they would actually take it, not because he was generous.
B1 verb pattern for a request or command.
Ask him to find out what she wanted.
B2 modality with an adjective + infinitive
The principal was happy to learn that his budget would increase next year.
I‘m happy to see you.
Be sure to remember to turn off the oven.