Don’t worry sir. I’m sure I can run to catch up with them.A. fast enoughB. enough fastC.

问题补充：

Don’t worry, sir. I’m sure I can run to catch up with them.

A. fast enough

B. enough fast

C. slowly enough

D. enough slowly

答案：

(答案→)A. fast enough

B. enough fast

C. slowly enough

D. enough slowly

解析：enough修饰形容词或副词，位于该词之后，故将BD排除，又根据前后文意思，可知答案为A