He started (working). This work (was) hard. offices are(much more) efficient. he has...

Question

He started (working).
This work (was) hard.
offices are(much more) efficient.
he has (developed).
offices are( much more )efficient
Какими частями речи являются слова в скобках?

Answer 1

Глаголами,вспомогательными и смысловыми