Answer:

ENG

AnswerCrossword Clue
ENGChang's twin
ENGChang's other half
ENGPart of ESL
ENGSiamese twins Chang and ..
ENGChang's Siamese twin
ENGH.S. class
ENGHigh school subj.
ENGOne of the Bunkers
ENGA Siamese twin
ENGChang's brother
ENGH.S. subject
ENGHumanities subj.
ENGLiberal arts major I barely got my B.A. in
ENGWhere Richard III was recently found in a parking lot: Abbr.
ENGFamous twin
ENGBath site (abbr.)
ENGSchool subj.
ENGNeighbor of Scot.
ENGLit. course
ENGOur lang.
ENGPart of the UK
ENGChang's closest kin
ENGH.S. course
ENGBrit's home
ENGType of lit.
ENGOfficial lang. of Jamaica
ENGPart of the U.K.
ENGPt. of ESL
ENGOfficial lang. of Gibraltar
ENGBath site: Abbr.
ENGComp. course
ENGH.S. requirement
ENGHigh School subj.
ENGLondon's land: Abbr.
ENGU.K. country
ENGSubj. including grammar
ENGUS language
ENGPart of OED: Abbr.
ENGOfficial lang. of Fiji
ENGOne of the Bunker twins