To lay (always takes an object)
I lay something down.
I laid something down yesterday.
I was laying something down.
I had laid something down.
To lie (never takes an object).
I lie down
I lay down yesterday.
I was lying on the bed.
I had lain there for an hour.
I watched my pet ferret climb onto my bed and ____ on the pillow.
lie
lay
She _____ there for about five minutes, licking herself all over.
lay
laid
After she had ______ there a while, she curled up and went to sleep.
laid
lain
While she was ________ there asleep, I carefully picked her up.
laying
lying
I carried the sleeping ferret to the chair and _____ her on the cushion.
lay
laid
While I was ______ the ferret on the cushion, she gave a little sighing sound and almost woke up.
laying
lying
After I had _______ her on the cushion, she rolled over and curled up again, without waking.
laid
lain
After she had ______ on the cushion another ten minutes, she woke so suddenly, it was as if she had been awake all along.
laid
lain
She then ran at full speed to my desk, snatched my pencil, jumped onto the bed, and _______ it on the pillow.
lay
laid
She then _______ on the pillow, on top of the pencil, and happily chewed the eraser off.
laid
lay
Later that night, when the ferret was asleep in her cage, I _______ down in my bed.
lay
laid
While I was _______ there, drifting toward sleep, I could smell pencil eraser and the faint, musky odor of ferret.