(单选题)

As a new graduate, he doesn’t know ______ it takes to start a new business.

A.how

B.what

C.when

D.which

参考答案：B

参考解析：

考查what引导的宾语从句。句意：作为一个刚毕业的学生，他不知道用什么去创业。根据句意可知，______ it takes to start a new business充当know的宾语从句，宾语从句中使用了固定搭配take some time / some money to do sth.，但是本句中缺少了take的宾语，且意为“什么”，故应填入连接代词what。故选B。

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