He is so idle that he always achieve -------- F grade in the Ehglish test。
A./ B.a C.an D.the
He is so idle that he always achieve -------- F grade in the Ehglish test。
A./ B.a C.an D.the
这个F是代表成绩,在这里是一个名词。如果作字母F的意思,也是名词,前面也要加an,例如
There is an F in the word floor.