help you, sir—I’m afraid you can’t. I have my students’papers________.

Can you tell me _______? —With Lucy’s help.

It is not always easy for the public to see _______use a new invention can be of to human life.

I have been keeping the portrait ______ I can see it every day, as it always reminds me of my childhood in Paris[ ]

Have you found the poor dog yet— Yes. But he was ____ when we found him. The bad weather killed him.