The workers, ________ had worked the whole day long, were worn out.
The overseas Chinese scientist made another wonderful discovery, ___________ of great value to study AIDS.
The situation is _________ --- we have no food, very little water and no medical supplies.
The long-lasting meeting __________ in disorder, __________ no conclusion.
He is only too ready to help others, seldom, _________, refusing them when they turn to him.
— Would you have your family get together this New Year’s Day? — ___________. We are busy working at that time.