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56. Since they betrayed us, they have no hope of convincing ________ their sincerity.
A) with
B) for
C) in
D) of（B）
57. They assured us that ________ was waiting for they were there to share it.
A) what
B) whatever
C) it
D) whoever（B）
58. ________ exposure to dirty air can cause people suffer from some diseases.
A) Raised
B) Prolonged
C) Expanded
D) Enlarged（C）
59. ________ about one of the most rapidly changing countries in a ceaselessly changing world is not all easy.
A) Being informed
B) To be informing
C) Have in formed
D) Informed（B）
60. Though you stay in the sea for weeks, you will not ________ contact with the outside world.
A) lose
B) fall
C) miss
D) fail（D）
61. Visitors to England sometimes find the lack of public activities in the evenings ________.
A) depressed
B) depression
C) depressing
D) depressingly（C）
62. Julie is one of those women who always ________ the latest fashions.
A) look after
B) keep up with
C) run for
D) go in for（D）
63. This traditional entertainment for children in America has never, ________ I know, become popular in China.
A) as far as
B) as much
C) to the extent that
D) so long as（A）
64. Mr. Smith attends to the ________ of important business himself:
A) transmission
B) transformation
C) transaction
D) transition（C）
65. Besides what you have explained, can you think of ________ reason for their terrible action?
A) any
B) else
C) other
D) another（A）
66. The chairman threatened ________ if his policies were not adopted.
A) to resign
B) resigning
C) to be resigned
D) being resigned（B）
67. She was able to give the police a full account of since she had been ________ to it.
A) an observer
B) an on-looker
C) a watcher
D) a witness（A）
68. Very few people understood his lecture, the subject of which was very ________.
A) obscure
B) upsetting
C) distant
D) inferior（A）
69. Although the national government has introduced some new laws on this subject, it is the ________ state governments which are responsible for pollution control.
A) precisely
B) primarily
C) progressively
D) preliminarily（B）
70. He would ________ it that his son took a livelier interest in politics.
A) see into
B) see through
C) see about
D) see to（D）
