第6部分：完形填空(第51～65题，每题1分，共15分)
下面的短文有15处空白，请根据短文内容为每处空白确定1个最佳选项。
51.
A. off
B. on
C. at
D. of
52.
A. is
B. was
C. were
D. are
53.
A. can
B. have to
C. need to
D. should
54.
A. after
B. for
C. in
D. at
55.
A. the
B. /
C. a
D. an
56.
A. With
B. If
C. But
D. And
57.
A. helping
B. being
C. get
D. be
58.
A. whose
B. who
C. that
D. when
59.
A. life
B. cars
C. warning
D. problem
60.
A. about
B. to
C. by
D. on
61.
A. use
B. inform
C. ask
D. teach
62.
A. let
B. allow
C. make
D. give
63.
A. have helped
B. helped
C. had helped
D. was helped
64.
A. speak
B. have
C. link
D. put
65.
A. lawyer
B. doctor
C. customer
D. specialist
