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Dear Taechers,

1. Did you get good results from your last business trip?

2. Did you gain good results as you expect in your last business trip?

- Are these natural to say?

Thanks very much to Teachers,

Stevenukd.
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1. is okay.

2. is not very natural.

Better: Was your last business trip successful?
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Also:

How did you (last) business trip go/succeed?