Поставьте глагол в Past Simple либо Past Continuous.1) What ...................... you

Поставьте глагол в Past Simple или Past Continuous.

1) What ...................... you (to do) .................................................................................
when your sister (to come) .............................................................................. home yesterday?
2) When an old man (to dig) ................................................................................ in the garden,
he (to find) .............................................................................................. three old coins.
3) ............................ it (to snow) .............................................................. yesterday?
Strange enough for the time of the year,
but it (to rain) ............................................................................................ from 2 till 6 yesterday.