They have been proposing to make it compulsory for students to take part in sports.
Today I discussed this sentence with two non-native English speakers who are English teachers, who respectively said the tense is OK and not OK. There is no special context; I simply hope to know whether the tense used is acceptable to native English speakers.
I have consulted several dictionaries, but none of them says PROPOSE cannot be used in the progressive tense.(point out my mistake if this is not called PROGRESSIVE)
Thank you very much.