Put the verbs in brackets into the Past Simple or the Past Perfect Tense.
The boys... (to fish) for three hours before Tom... (to catch) the first fish.
2. Mary (to give) me a warm blanket before I... (to go) to bed.
3. After we... (to buy) the tickets, we... (to go) to the platform
4. We.. (to discuss) that problem for more than an hour before we...
5. Driving to the hospital... (to be) difficult as it... (to snow) all night
6. The lawyer (to prepare) all the documents by 4 o'clock yesterday