Подчеркните модальные глаголы и их эквиваленты,
переведите предложения:


1.          
The technologist is to investigate the unknown.


2.          
The engineer must apply engineering tables and formulas in his work.


3.          
All the units of a new tractor can be produced at this plant.


4.          
They have to pay for their education.


5.          
He was able to do this task himself.