问题
选择题
Anna is _____ to work out the math problems and gets a good grade.
A．hard enough
B．enough hard
C．hard-working enough
D．enough hard-working
答案
答案：C
题目分析：句意：Anna足够努力，她可以解决这道数学题并取得好成绩。Enough 在修饰形容词时要放在形容词后面，排除B，D；hard 做努力时是副词，不合题意；hard-working努力的，形容词故选C。