单选题 Dr. Fields received so large bill when he checked out of the hotel that he did not have enough money to pay for a taxi to the airport.
A. so large bill
B. checked out of
C. that
D. pay for

【正确答案】 A

【答案解析】改为so large a bill。此处考查的是so的用法。表示“如此……的……”时，用so+形容词+a/an+可数名词单数，正如此题。bill账单，为可数名词，故前面不要忘了加a。so large a bill数额如此庞大的账单。