O-Net 2021

(Item 21-25)

Dear Nikhom,
I'm home with my family at last. It was very much long journey
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and I am a little bit jet lagged. I had to get it over soon.
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First I'd like to thank everybody again with your warm hospitality
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while I stayed at your home. Everybody is treating me as part of the
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family. Now I felt real homesick and miss you all.
                      25
I'll write again soon.
Takecare, 

What is the most suitable answer for  25?

1. really feel
2. was feeling real
3. was really feeling
4. really felt
5. have really felt

Answer: 1. really feel