1. His sister studies\\studied at school (нет указания на время).2. We translated this text last lesson (\"на прошлом уроке\").3. They work\\worked every day (нет указания на время).4. My father went to Moscow yesterday (\"вчера\").5. His children like\\liked music (нет указания на время).6. They go\\went to the village every Sunday (нет указания на время).7. At last she opened the window (\"в конце концов\").8. Yesterday he knew these words well (\"вчера\").