Раскрыть скобки в нужном времени:
1. Sam was tired. He (drive) since 7 am.
2. She (fry) the meat when the frying pan caught fire.
3. Ivan (return) from school at five o’clock.
4. She (type) a letter while she (talk) on the phone.
5. Mother (see) that Nicolay (not wash) his hands.