Are these sentences natural? Jan 10

English as a Second Language English Vocabulary, Grammar and Idioms
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Hi,

Are the following sentences natural to a native ear?

[color=blue]1. Are you able to sit upright for a long time / for long?

  1. That now must have grown to a big amount if you account for the interest. ( we were talking about a small amount lent to person A by person B)

  2. How much snowfall did you get in this area when you were young?

Thanks,
MG.

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