It was at the very beginning____ Mr.Smith made a decision ___we should send for a doctor.

下列有关文学常识的表述，有误的一项是（ ）

Our teacher is ______ a white dress.

Mr. Hawking leads__________ busy life every day, even though he’s one of ____________most famous scientists in the world.

The injured boy tohospital by a policeman yesterday.