B   we don't need to hurry    c you must't lose them   d you needn't wait for me

e You musn't forget to turn the lights off    f but I don't need to call him

exercice 2   c we needn't reserve      d  I have to work....  e  you must tell me

f   you musn't tell..Susan....    g  I must hurry    h  we don't have to decide now

i  we musn't forget to buy....