T0 be a“tough girl” means you are not only __________tough, but also mentally independent.

  ----Why don’t you ______ to a more sensible method? ----Well, I’m thinking about it.

Thanks to Mr. Smith the father and the son eventually________after ten years' cold relationship between them.

—How did your father　　　　smoking?—The doctor told him to do so，and he took the advice.

 The effect of the medicine on this kind of disease remains ________.