Stefan ________ from heart attack for more than ten years, but now he’s healthy and energetic.
--- Albert, I have a favor to ask you. --- _______.
“The moment ______ soon,” he thought to himself, waiting nervously.
______ nearly all behavior is learned behavior is a basic assumption ______ has been put forward by the social scientists.
He is very ______ and well-qualified, so he should reach the top of his profession.
______ nobody else at hand, I had to carry the heavy box to the eighth floor by myself.