[ ]that that is our Chinese teacher A whatis B where isc who is D how is选择填空

[ ]that that is our Chinese teacher A whatis B where isc who is D how is选择填空
[ ]that that is our Chinese teacher A whatis B where isc who is D how is
选择填空

[ ]that that is our Chinese teacher A whatis B where isc who is D how is选择填空
C
因为从our Chinese teacher 可以看出问的是人,所以要用who