Ответ:
Сначала present continuous, потом present simple и past simple
I'm taking photos of Moscow's sights
I often take photos of Moscow's sights
Yesterday I took photos of Moscow's
I'm going for a walk with my friend
On mornings I usually go for a walk with my friend.
Last weekend I went for a walk with my friend
I'm lestening to music in my room.
I sometimes listen to music in my room
Two days ago I listened to music in my room
Grandfather is picking up toys
Grandfather often picks up toys instead of children
Grandfather picked up toys yesterday
Little boy is watering the plant
Little boy waters the plant everyday
Little boy watered the plant yesterday