Appropriate is used with these nouns as the subject:
congress

be, seem
consider sth, deem sth, feel sth, think sth
It was thought appropriate to award her the prize.

extremely, fairly, very, etc.
entirely, perfectly
culturally

for
It might be appropriate for him to attend the course.

to
Tutors can construct tests appropriate to individual students' needs.

Appropriate is used with these nouns:
action, adjustment, agency, analogy, answer, authority, balance, box, channel, choice, compensation, context, degree, expertise, facility, fashion, fee, feedback, instrument, limit, manner, means, measure, metaphor, place, precaution, punishment, qualification, recognition, reference, remedy, replacement, response, safeguard, sentence, setting, size, starting point, time, training, use, venue, way, wording