Pansy's composition is very good. ( )a few spelling mistakes

題目：

Pansy's composition is very good. ( )a few spelling mistakes.
A) except B) except for C) except that D) besides
爲什麼不選A啊

解答：

except for 表示不同類事物,題中的mistakes和composition顯然不同類.
except表示同類事物,舉個例子：Nobody was in the classrom except Tom.這裡的nobody和Tom都是人,所以是except