A：Do you feel all right? You look Pale.
    B：All my joints seem to hurt and I have a terrible headache.
    A：Have you taken your temperature?
    B：No, not yet , but I do feel a little feverish.
    A：How long have you been feeling this way?
    B：Only since this morning.
    A：Oh, probably you've been working too hard.
    B：Maybe you are right.