Task scream: add english stub in checker
Task scream: add english stub in checker

HackerDom/qctf-school-2015,HackerDom/qctf-school-2015,HackerDom/qctf-school-2015,HackerDom/qctf-school-2015,HackerDom/qctf-school-2015,HackerDom/qctf-school-2015,HackerDom/qctf-school-2015