第一单元： NYYY NG YY
an international curriculum and international standards
develop their self-worth
being taught the basics and being examine
DDBBD
第二单元：YNYYY NG N
shared his jokes
isn't right for him
have a huge problem
DBACC
第三单元：NYNY NG YN
it was nothing
with his last strength
found food under his blanket
CBBDA
给邮箱吧 我把全部的发你邮箱里