Образовать отрицательные и вопросительные предложения на языке his dog often play in the garden. и ann's mother is cook a cake in the kitchen now

His dog doesn*t play in the garden/

Does his dog play in the garden?

Ann*s mother isn*t cooking a cake in the kitchen now.

Is Ann*s mother cooking a cake in the kitchen now?

P.S.В вопросе (вашем) - ошибка. ДОлжно быть так Ann's mother is cookштп a cake in the kitchen now, а у вас там просто cook без ing-ового окончания.