2012大学英语四级语法-ing真题训练（十）

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2012大学英语四级语法-ing真题训练（十）  
46. “She has been working very hard recently.”  
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    “Because the burden of a big family has been ______ on her shoulder.”  
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* J2 a, ^; m  _8 ~6 T. O    A)borne       B)born       C)bore        D)bear  
      
    47. When ______ , the metal expands , and if ______ to cool , it will contract.  
1 a9 Q4 V8 V" V. M6 I# `) e      
& Z- ]! C, f  m' j! L4 E9 w    A)heating ; allowed    B)heating ; allowing    C)heated ; allowed   D)heated ; allowing  
      
    48. Henry is so indifferent to his appearance that he never has his clothes ______.  www.Examw.com
      
$ _9 |% u9 N$ U. F( p8 ^    A)pressed nor shine his shoes        B)pressed or his shoes shined  
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* E$ C& h7 [1 n+ q/ d    C)to press or his shoes to shine       D)pressing or his shoe shined  
8 Y) N/ P, h1 U  E8 F( x 49. Is there anything you want from town? I am going to get______.  
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    A)mailed letters    B)these letters mailed    C)those letters mail   D)to mail those letters  
      
    50. The teacher was very strict with the students. He had them _____ a diary without interruption.  
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    A)to keep      B)keep       C)having kept      D)to be keeping  
: Z- {) N' f4 g/ H* q答案：46 a 47 c 48 b  49 b 50 b