Question

--- Oh, my cat is really fat.
--- You ________ have given her so much food

1. A.
   wouldn't
2. B.
   mustn't
3. C.
   couldn't
4. D.
   shouldn't

Answer 1

D
本题考查情态动词。句意：——我的猫真的太胖了。 ——你不应该给她那么多的食物。此处表示和过去事实相反的情况，应该用shouldn’t + have + 过去分词，意为本来不应该做，而实际做了。