用方框中所给词语的适当形式填空，每词仅用一次。

repeat against master turn off humorous

(1). Remember to ________ the lights before you leave the office.

(2). Everyone was touched by that great erhu ________ performance.

(3). I could hear the sound of the rain beating ________ my window heavily.

(4). Among the three actors, Mr. Black is ________.

(5). I ________ the sentence three times, but he still doesn’t understand it.