（） in universities around the nation has more than tripled compared to this time last year.

A:Enroll B:Enrolls C:Enrolling D:Enrolhnent

If he (gives) a chance to (enroll) in your university, I'm sure he (will prove) his (worth).

A:gives B:enroll C:will prove D:worth

If he (gives) a chance to (enroll) in your university, I'm sure he (will prove) his (worth).

A:gives B:enroll C:will prove D:worth

Bob: Professor Davis, I wonder if I could enroll in your biology course Nancy: ____________

If he (gives) a chance to (enroll) in your university, I'm sure he (will prove) his (worth).

A:gives B:enroll C:will prove D:worth

She decided to ______ in the history course at the local evening school.

A:enter B:enroll C:attend D:register