We can learn ________ from the story.
—It's time________the mountain.Are you ready? —Sorry,I forgot to bring water.
—Would you like to have________apples? —No,thank you. I've had enough.
________your books in the bookcase,Jerry.
You should cut______an onion and a tomato first and then put them_____the blender.
—What' the next step? —Oh,please put some meat between two________of bread.