Scientists say they have found a way to produce the human body’s own cancer-killing cells through gene treatment, ____ new hope to cancer sufferers.
Since people are fond of humor, it is as welcome in conversation as _______ else.
Everyone wants to live in a beautiful, comfortable and “livable” place, but not ______ know where it is.
______ in color, the garden looks dull in this late fall.
--- Albert, I have a favor to ask you. --- _______.
“The moment ______ soon,” he thought to himself, waiting nervously.