You should ________ the facts related to this problem, which can make others know you are innocent.[ ]

It is five years since my dear aunt _______ here

._____ her poor health, she stuck to her post all the same.

Let’s go out to play.—Sorry, I must ______ the piano now.

Can I help you, sir?—Yes, please. Do you have any books on cooking?—There are only a few, ____.