Решение:
Выбираем правильную форму глагола в зависимости от времени и подлежащего.
- He visits his grandparents every month. (Present Simple, 3 лицо ед.ч. + обстоятельство времени 'every month')
- She climbed up a tree yesterday. (Past Simple, обстоятельство времени 'yesterday')
- They play football on Mondays. (Present Simple, мн.ч. + обстоятельство времени 'on Mondays')
- My mum always cooks for us. (Present Simple, 3 лицо ед.ч. + обстоятельство времени 'always')
- My grandma baked bread last week. (Past Simple, обстоятельство времени 'last week')
- Tom and Ben came to school late yesterday. (Past Simple, обстоятельство времени 'yesterday')
- He writes every month. (Present Simple, 3 лицо ед.ч. + обстоятельство времени 'every month')
- She went to Spain last summer. (Past Simple, обстоятельство времени 'last summer')
Ответ: visits; climbed; play; cooks; baked; came; writes; went.