—I ________ the piano. I usually practice the piano at that time.

    Long long ago, there was a spider. She found a beautiful farm. She liked the farm and decided to live there forever.
    One day, the spider caught a little bug. When the spider ate it, the bug said, “If you let me go, I will tell you an important thing. The thing will save your life.” The spider stopped and listened.
    The little bug said, “You'd better get out of the farm. The harvest is coming! If you stay here, you will be killed by the farmer's machine.”
    But the spider didn't listen to the bug and ate it for lunch. The next day when she was sleeping, the farmer came to have a harvest. The spider was killed by the machine.

What were they doing?

—Not yet. He ________ on it last night.

they when you knocked at the door?

She on the bed at this time yesterday.

— in the park at 7:00 yesterday morning?

—, .

—Sorry, I ________with my brother at that time.