she is not comfortable sitting by you...
The couch is always comfortable. The bed is very comfortable.
After a long day of work, I sink into my cozy armchair and finally feel comfortable.
I am much more comfortable now, thank you.
I was very comfortable with the new living arrangements. I feel comfortable in my clothes. My cat is no longer skittish, she is comfortable in the house.
The long version of "it's" is "it is", and the plural of "it is" is "they are" (or "they're"). So:Singular:It is a comfortable chair.It's a comfortable chair.Plural:They are comfortable chairs.They're comfortable chairs.
She settled into the plush armchair, feeling as comfortable as a pillow.
"Is that sweater comfortable?" Asked Jean's mother. Our furnishings are the most comfortable brands! The spokes person boomed.
The verb is: is
Feel is the linking verb because it corresponds with the word comfortable. FEEL COMFORTABLE!
Yes, but the sentence will probably become longer than comfortable to read.
a good sentence would be my dog went round and round in circles before his nap
I wasn't used to such luxury so I felt uncomfortable sitting in such a comfortable chair.