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might be may have been should have been could be
at a time at one time for some time for the time
to do other work than on VDTs to change their computers if necessary to go back home to have a rest to have their health tested
Strange and wonderful equipment. Factory-produced chemicals. Modern medicines. Plants.
having; to know having; knowing to have; to know to have; knowing
Plants. Factory-produced chemicals. Modem medicines. Strange and wonderful equipment.
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Strange and wonderful equipment. Factory-produced chemicals. Modern medicines. Plants.
have tested tested are testing test
at a time at one time for some time for the time
regular magical physical reliable
Plants. Factory-produced chemicals. Modern medicines. Strange and wonderful equipment.
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at a time at one time for some time for the time
survive recover suffer remove
For example As a result By the way As a matter of fact
at a time at one time for some time for the time
can change the working conditions for the operators can limit the dangers from the electro-magnetic radiation can also affect the growth of the cells can protect the health of the computer operators
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