单项选择题

No one could come up with an easy solution to the government’s predicament—labor （）which is caused by the wars.

A. decline
B. vacancy
C. rarity
D. shortage

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She（）his invitation to dinner as she was on a diet.

A. inclined
B. declined
C. denied
D. disinclined
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In the past most pilots have been men, but today the number of women （）this field is climbing.

A. shamming
B. devoting
C. registering
D. pursuing
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