Поставьте глагол, данный в скобках, в подходящей видо- временной форме. Укажите

Поставьте глагол, данный в скобках, в соответствующей видо- временной форме. Укажите время глагола.

1. When the worker ( to come) a secretary ( to say) a manager (to leave).
2. The machines (to dig) the main tunnels were about 8,5 metres in diameter and 250 metres long.
3. The committee (to discuss) the bill at this moment.
4. They (to start) in 2015 on opposite sides and meat in the middle under the sea.
5. They just (to use) specially- designed tunnel boring mashines to dig the tunnels throut the rock under the seabed.
6. At the yesterday's conference the reporter (to speak) about the work of the engineering plant!