Решение:
- 1. Sam spoke German well last year. (Глагол 'speak' в Simple Past образуется как 'spoke').
- 2. I did not help my friend yesterday. (Для отрицания в Simple Past используем 'did not' + инфинитив глагола 'help').
- 3. Mona called me at 9 a.m. on Monday. (Глагол 'call' в Simple Past образуется добавлением '-ed').
- 4. Did you ride your bike yesterday? (Для вопроса в Simple Past используем 'Did' + инфинитив глагола 'ride').
- 5. They did not win the game yesterday. (Для отрицания в Simple Past используем 'did not' + инфинитив глагола 'win').
- 6. Did she buy a present for her mum? (Для вопроса в Simple Past используем 'Did' + инфинитив глагола 'buy').
Ответ: 1. spoke 2. did not help 3. called 4. Did you ride 5. did not win 6. Did she buy