Aşağıdaki cümlelerden hangisinde karşılaştırma yapılırken hem '-er' hem de 'more' kullanılması gerekir?
A) This box is ___ (heavy) than that one.
B) She is ___ (beautiful) than her sister.
C) He runs ___ (fast) than I do.
D) The test was ___ (difficult) than I expected.
