阅读下面短文，从短文后各题所给的四个选项（A、Ｂ、Ｃ和Ｄ）中，选出可以填入空白处的最佳选项，并在答题卡上将该选项涂黑。
I still remember my first job in the city center. The         was large, dark and old         the physics lecture room was on the second floor.         , it wasn’t a lecture room at all, it was an ordinary room, but it had “LECTURE ROOM’ on the        . The students were sixteen or seventeen years old,         several years younger than me.        , some of them looked and acted        older than me sometimes.
The room was directly        the street, and had the window looking out over the street and many houses. One day, I was        some words on the blackboard when I heard a sudden change in the noise behind me. There was a man standing in the room with        an apple in his hand. He looked       .
“Who threw this?” he asked, looking round the class.
“I beg your pardon? What is the matter?” I said. “      threw this apple out of the window,” he said. “It        on my car.”
“Who threw an apple out of the window?” I        to the class. There was no answer.
“I        the fellow who threw this.” said the man. “I will be        outside for you.” And then he left, closing the door behind him.
      was silence and I continued with the lesson. At the end of every lesson, usually the class were all        before the bell finished ringing, leaving me saying “That’s all for today” to an empty     .  This time, when the bell went for the end of the lesson, no one       .  “That’s all for today,” I said. “You go first, sir,” said one of the boys. It made a nice change, I being out first.

A．room B．building C．floor D．city

A．and B．as C．so D．but

A．Happily B．Luckily C．Properly D．Actually

A．floor B．ground C．door D．window

A．over B．only C．up D．almost

A．In fact B．In the end C．After all D．As a result

A．more B．less C．very D．even

A．on B．above C．below D．in

A．getting B．making C．taking D．putting

A．hardly B．almost C．half D．such

A．angry B．kind C．sorry D．happy

A．Anyone B．One C．Who D．Someone

A．hit B．defeated C．landed D．arrived

A．asked B．said C．talked D．told

A．hate B．find C．get D．want

A．waiting B．looking C．finding D．seeing

A．It B．There C．This D．That

A．walked B．left C．gone D．ended

A．lesson B．class C．room D．lecture

A．heard B．finished C．spoke D．moved