hard ~ing VS hard in ~ing

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youngbut

Member
Joined
Oct 27, 2012
Member Type
Student or Learner
Native Language
Korean
Home Country
South Korea
Current Location
South Korea
Hello, everyone.

Which in the setences below could sound more natural to native speakers?


John didn't understand what was so hard solving the math problem.

John didn't understand what was so hard in solving the math problem.


Thank you very much in advance.
 
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philo2009

Senior Member
Joined
Jan 16, 2009
Member Type
Academic
Native Language
British English
Home Country
UK
Current Location
Japan
youngbut said:
Hello, everyone.

Which in the setences below could sound more natural to native speakers?


John didn't understand what was so hard solving the math problem.

John didn't understand what was so hard in solving the math problem.


Thank you very much in advance.
Click to expand...

Neither.

--> hard about solving...
 
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