The student (behave) very badly. переробить у:
Pr.Simple
Past Simple
Future Simple
Pr.Cont.
Past Cont
Pr.Perfect
Past Perfekt

спасибо)))

Pr. Simple The student behaves very badly. Past Simple The student (behaved) very badly. Future Simple The student (will behave) very badly. Pr. Cont. The student (is behaving) very badly. Past Cont The student (was behaving) very badly. Pr. Perfect The student (has behaved) very badly. Past Perfect The student (had behaved) very badly.