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Text from totleigh - English

feel regret
I'm not sure about this sentence, should I say...
"Sally feels regret that she bought that computer" or "Sally feels regret that she has bought that computer".
Are both sentences OK (are they natural-sounding sentences)? Thanks!

หัวข้อ
- feel regret
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- เพิ่มการแก้ไขใหม่ - หัวข้อ
Sentence 1
- I'm not sure about this sentence, should I say...
  Vote now!
- เพิ่มการแก้ไขใหม่ - Sentence 1
Sentence 2
- "Sally feels regret that she bought that computer" or "Sally feels regret that she has bought that computer".
  Vote now!
- เพิ่มการแก้ไขใหม่ - Sentence 2
Sentence 3
- Are both sentences OK (are they natural-sounding sentences)? Thanks!
  Vote now!
- เพิ่มการแก้ไขใหม่ - Sentence 3