1) Ago, long, machine-tools, existed
2) invention, a, not, machine-tool, new, a, is, today

3) Today, are, different, the, machines, from, of, those, of the past

4) Be, different, in future, machine-tools, will

5) The, do, workers, what, will? 
Нужно правильно расставить порядок слов чтобы получились предложения

1. Machine-tools existed long ago.2. A machine-tool is not a new invention today.3. The machines of today are different from those of the past.4. Machine-tools will be different in future.5. What will the workers do?