问题
选择题
My sister is three years ______than I. She is _______young _____go to school.
A．young; too; to
B．younger; enough; to
C．younger; too ;to
D．young; so; that
答案
答案：C
考查比较级和固定句型。句意“我妹妹比我小三岁，她太小了还不能上学。”than提示用形容词的比较级，排除A、D；enough放在做日常的后面，排除B。too... to“太......而不能做......”。故选C。