I'm pleased to hear that you've come here to this matter in person.A. lead to B. see toC.

问题补充：

Im pleased to hear that youve come here to this matter in person.

A. lead to

B. see to

C. refer to

D. turn to

答案：

A. lead to

(答案→)B. see to

C. refer to

D. turn to

解析：句意：今天我很高兴听说你亲自来调查这件事情。lead to导致，通向；see to调查；refer to提及，谈到；turn to求助于。根据句意故选B。