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______ for their support, he would have gone penniless.
A、If it is not
B、If it should not be
C、Were it
D、Were it not
【正确答案】：D
【题目解析】：本题考察IF的虚拟条件句，当省略If时，be动词提前，倒装。这句话的意思是：如果不是他们的帮助，他早已经身无分文了，D项符合题意。