48. Mara Dona will [face] a possible prison term [if] [finding] guilty [on] the shooting
                 A                   B       C           D
charges.  

答案：C应改为found，谓语动词和主语之间的关系为被动。

49. [Having returned] from [Berlin], he received no [telephone call], [neither]. 
A         B              C                 D
答案：D neither表示否定意义，但句中已经有了否定词no。

50. "I[am looking] forward [to] [receive] your letter!" she said [happily].  
        A              B   C                       D 
答案：C应改为receiving，look forward to doing sth，盼望做…。

51. [It is] [in] his spare time [when] Robert teaches [himself] English and Japanese.  
    A   B              C                  D  
答案：C应改为that, it is…，that…强调句型（时间）。

52. People complain that [the cost] of [setting up] a company [are] so great that only   
                       A       B                C  
the rich can afford [to run] a company in that country.  
                 D
答案：C应改为is，因为本句的主语是the cost ，是不可数名词。

53. Between [you and I], we [have had] an eye [on] him for some time,  
A          B            C  
and he [might be] a runaway.  
         D  
答案：A代词用错，通读全句，可知A中I不对，应改为he。

54. [At] school Li Ming ran [into] many problems, such as [choosing] classes
    A                   B                        C