I came across this question in one of the English standardize tests in my country:
It is required that the new student _____ in an extra English conversation course.
- will enroll
- would enroll
- is enrolling
The suggested key states that the answer is 1. enroll From my understanding, that choice is correct because we supposed to use present simple tense when stating such factual information. However, why wouldn't it be enrolls since the subject of the verb is new student which is a singular noun? Or that choice is correct because of any other reason or grammar rules?