2013年英语专业四级考试临近，特为大家准备以下考题，考题与考试题型完全吻合，希望能在最后的冲刺时间里给大家带来一点帮助。
51. He advised Jane __ anyone about the shortages of food.
A. not telling
B. not tell
C. tell not
D. not to tell
52. He operates the new machine as if he __ special training in it.
A. has received
B. had received
C. would receive
D. received
53. It is very kind of you to do the washing-up, but you __ it.
A. mustn't have done
B. shouldn't have done
C. oughtn't to have done
D. didn't have to do
54. __., he does get annoyed with her sometimes.
A. Although much he likes her
B. Much although he likes her
C. As he likes her much
D. Much as he likes her
55. The newly broadened stadium is __ of the previous one.
A. the size of three times
B. three times the size
C. as much as the three times size
D. three times more than the size
56. I hope that the little __ I've been able to do has been of some use.
A. which
B. what
C. that
D. when