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?