Susi : I often get remedial but you never get remedial and you always be the best in the classDina: If you want to be the best student _____ (1) _____ and ____ (2) _____
Dina: you _____ (3) _____ in the exam. believe in yourself and do the bost

1.
a. You must study hard
b. you must cheating in the exam
c. You must copy your friend's homework
d. You must studying when you'll have

2.
a. You mustn't be diligent
b. You must be diligent
c. you must be lazy
d. you must confident

3.
a. Must not cheating
b. Must trust your friend
c. must not do the best
d. mustn't be too serious​