he
The two-letter word that means "us" is "we."
it
No.
The two letter prefix which means outside is ex, as in the word, exhale, to breathe out.
"ki" means soul, or spirit.
One seven letter word, One two letter word and a five letter word, One three letter word and a four letter word, One three letter word and two two letter words, Two three letter words, Three two letter words, A two letter word and a four letter word, A six letter word, A two letter word and a three letter word, A five letter word, Two two letter words, A four letter word, A three letter word, or A two letter word.
engaged
what about "many"?!
Five letters, but two words: at war.
chalice
The word you are looking for is "bilingual."
KOREA