请认真阅读下面短文，从短文后各题所给的A、B、C、D四个选项中，选出最佳选项，并在答题卡上将该项涂黑。
TWIST OF FATE
On March 23, 1994, the medical examiner viewed the body of Ronald Opus and concluded that he died of a gunshot wound to the head. Mr. Opus had jumped from the top of a ten-storey building,        to commit suicide.
As he          past the ninth floor, his life was interrupted by a shotgun blast passing through a window, which killed him           . Neither the shooter nor the dead was aware that a safety net had been installed just            the eighth floor level to             the building workers and that Ronald Opus failed to complete his            the way he had planned.
The room on the ninth floor was          by an elderly man and his wife. They were           , and the husband was threatening his wife with a shotgun. The old man was so          that when he pulled the trigger (扳机), he completely missed his wife, and the      went through the window,         Mr. Opus. One intends to kill subject “A” but kills subject “B” in the attempt.
When faced with the murder charge, the            said that they thought the shotgun was not loaded. The old man said it was a long-standing            to threaten his wife with the unloaded shotgun and that he had no intention to murder her.        , the killing of Mr. Opus appeared to be an accident; that is to say, it was assumed that the gun had been accidentally loaded. The continuing investigation turned up a         who saw the old couple’s son loading the shotgun about six weeks prior to the fatal accident.
The case now becomes the murder of Ronald Opus             the old couple’s son’s part. Further investigation revealed that the son was,         , Ronald Opus. It transpired that the old lady had cut off her son’s financial            and the son, knowing the inclination of his father to use the shotgun threateningly, loaded the gun with the expectation that his father would shoot his mother. Later, he became increasingly despondent (意志消沉的) over the failure of his attempt to             the murder of his mother and then he jumped off the building, only to be killed by the shot.
The truth about the matter had come to light,            the medical examiner closed the case as a suicide.

A．agreeing B．intending C．pretending D．refusing

A．fell B．ran C．walked D．climbed

A．occasionally B．carelessly C．instantly D．peacefully

A．before B．on C．to D．below

A．warn B．protect C．prevent D．trap

A．suicide B．journey C．task D．attack

A．booked B．occupied C．cleaned D．decorated

A．arguing B．wondering C．escaping D．relaxing

A．curious B．excited C．upset D．weak

A．gun B．stone C．stick D．bullet

A．disturbing B．frightening C．striking D．pushing

A．jury B．crowd C．audience D．couple

A．habit B．dream C．demand D．purpose

A．Otherwise B．Therefore C．However D．Instead

A．thief B．servant C．witness D．guard

A．with B．on C．without D．for

A．for short B．in fact C．with difficulty D．on principle

A．institution B．advice C．service D．support

A．engineer B．accept C．investigate D．suspect

A．because B．though C．so D．if