______ the help of my English teacher I would not have succeeded in the speech contest.A．
公共英语
已帮助 人
______ the help of my English teacher, I would not have succeeded in the speech contest.
A．But for
B．Despite
C．Regardless of
D．Besides
请帮忙给出正确答案和分析，谢谢！
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正确答案：A
根据句意，后半句的would not have succeeded是对过去的虚拟式表达，前半句则是对一个事实的描述，因此这里应该填人一个表达假设条件的词或词组，只有but for符合要求，等同于if it had notbeen for….Despite“尽管”表让步，Regardless of意为“不管，不顾”，Besides“此外”表并列。