You look very sleepy. You ______ go to bed so late when you have to get up early the next day.
shouldn´t
must
have to
don´t have to
You ______ use your phone during the exam or the teacher will take it away from you.
don´t have to
must
mustn´t
ought to
My dad ______ come home at lunchtime because there´s a good restaurant near his office.
must
doesn´t have to
mustn´t
has to
We ______ post this parcel before six o´clock or it won´t arrive in time for Jane´s birthday.
must
don´t have to
have to
mustn´t
I ______ finish this work before dinner, but I´m so hungry I can´t wait any longer.
oughtn´t to
shouldn´t
should
ought to