**b) Use the words from Ex. 3a to complete the sentences.
1 Doctors need to be calm in an emergency.
2 Artists need to be
because
they have to think of new ideas.
3 Cashiers need to be
to
customers.
4 Firefighters need to be
because they have got a dangerous job.
5 Teachers need to be
... because
they have to explain things to their
students.
6 Aerobics teachers need to be
because they do exercise every day.​

b) Use the words from Ex. 3a to complete the sentences.
1 Doctors need to be calm in an emergency.
2 Artists need to be creative because they have to think of new ideas.
3 Cashiers need to be polite to customers.
4 Firefighters need to be brave because they have got a dangerous job.
5 Teachers need to be patient because they have to explain things to their students.
6 Aerobics teachers need to be fit because they do exercise every day.