I that actress in quite a few films, but her name escapes me for the moment.
— My son spoiled your carpet. Let me buy you a new one. — ________.
Natural disasters occur at ________ times, so it is always difficult to warn people in advance.
________ when your ticket has been checked will you be allowed to take the plane.
Sometimes we can see more than 60 students are ________ in a small school bus, which can easily cause traffic accidents.
— I heard the voices, but couldn’t ________ what they were saying.— Why not go over? It won’t do you any harm.