Очень нужна Таблица
Regular activity | Activity at a certain moment or period of time | Activity finished by the moment of speech

если нужно использовать только формулу " i  " , то:

i can build a farmhouse.

i can go across the bridge.

i can dig in the garden.

i can ride a horse.

true,  students can buy bottles of water

1. create the museum

2. turn into a monument

3. remove the old building

4. become more beautiful

5. replace with new cafe

6. paint the walls

7. change everything

1.i was sitting in front of the fire when they called out to me

2.i was getting the tea ready when there was a knock at the door

3.she was dusting the carpet when her cat knocked a vase off the table

4.we were finishing our tea  when  my mother came home from work.

5.they were going down the garden path when  she stopped and waved