He put in a special for an extra day's holiday so that he could attend his daughter's wedding.
A. request
B. demand
C. inquiry
D. proposal
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(答案→)A. request
B. demand
C. inquiry
D. proposal
解析：request请求，put in a request for (提出请求)。enquiry询问，demand 需求，需要，proposal建议，均不和题意。