Sentence Correction

试题详情

题目:

Egyptians are credited as having pioneered embalming methods as long ago as 2650 BC.

选项:

A、as havingwith having
B、to have
C、as the ones who
D、for being the ones who

答案:

B

提问:

请问为什么选择B,我选择的是c,是固定搭配吗,其他选项我可以排除
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