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I am not sure what problem it has vs I am not sure what problem it was

I am not sure what problem it has vs I am not sure what problem it was which is much better to use in a sentence. Which is more popular in English form?

Looking on the internet deeply has found these results:

I am not sure what problem it has is the most popular phrase on the web.

I am not sure what problem it was

11 results on the web

I am not sure what problem it has

1463,000,000 results on the web

More popular!

Some examples and use cases from the internet:

Some examples and use cases from the internet:
  • I am not sure what we have there geshehen.
  • I am not sure what damaging and almost destroying the Central Bureau of Statistics in the Palestinian territories has to do with rooting out terrorism.
  • I am not sure what happened.
  • I am not sure what would interest you.
  • I am not sure he's the problem.
  • I am not sure what you want.
  • I am not sure what she has.
  • I am not sure what I have accomplished coming here.
  • I am not sure he's the problem.
  • I am not sure what we have there geshehen.
  • I am not sure what would interest you.
  • I am not sure what damaging and almost destroying the Central Bureau of Statistics in the Palestinian territories has to do with rooting out terrorism.
  • I am not sure what I have accomplished coming here.
  • I am not sure what you want.
  • I am not sure what happened.
  • I am not sure what she has.

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