Must or mustn't? Vets ______ be nice with animals.
must
Must or mustn't? Fire fighters ______ be brave.
must
Must or mustn't? Teachers ______ give a lot of homework.
mustn't
Must or mustn't? Waitress ______ be rude.
mustn't
Must or mustn't? Nurse ______ help doctors.
must
Preposition of place
in front of
Preposition of place
behind
Preposition of place
on
Preposition of place
in
Preposition of place
next to
Preposition of place
between
