—The English exam is not difficult, is it? — . Even Tom to the top students failed in it.
______ the police thought he was the most likely one, since they had no exact proof about it, they could not arrest him.
hungry I am, I never seem to be able to finish off this loaf of bread.
____ caused the accident is still a complete mystery.
____ is a fact that English is being accepted as an international language.
You can’t imagine ____ when they received these nice Christmas presents.