This is a directive illocution; it violates the preparatory rule
that H (the student) is not expected to do A (be on time) in the ordinary
course of events.
This is an expressive illocution; it violates the sincerity condition
because S does not really feel gratitude).
This is a directive illocution; it violates the sincerity condition
because S (the professor) does not really believe that A (studying for
speech acts for the midterm) will benefit H (the students taking the midterm).
This is an expressive illocution; it violates the preparatory condition
because the event (the suicide) is not in H's interest; maybe also the
sincerity condition could be invoked.
This is a questions (directive); it violates the preparatory rule
that S (the professor) does not know the answer. Note though that this
violation is okay when professors make up exam questions, but not for ordinary
questions/answers.
This is a commissive illocution; it violates the preparatory rule
of promissing something that will normally happen anyway.
This is an assertive illocution; it violates the preparatory rule
of informing the hearer of something s/he is believed not to know already.
This is a directive illocution; it violates the propositional content
rule that the act (of crossing the street) must take place in the future.
This is an implicit commissive illocution; it violates the sincerity
rule because knowing I will be in Paris on Monday, I have no intention
of going to the movies with you on Tuesday.
This is a directive illocution; it violates a preparatory rule that S (the student) is not the right kind of person to issue orders to H (the professor).