I have had the cake for 3 days 这句话为什么加had?

I have had the cake for 3 days 这句话为什么加had? I have cake , have please the cake the word I have chosen rhymes with cake （） you （） the cake i made for you?A do,eat B did,eat C had,eaten D have,eaten I have had all the answers-----(check) I made the cake m____ It is a kind of cake I----- I------ the moon .Some have m_____,bang mang The cake is delicious ,I want to have the second one .这个句子错在哪里? 这儿I have told you是什么成份You can make the cake in the way I have told you. i'd like (have)a cake Can I have one more cake? The cake ____ nice.Can I have another one,Mum 空格内填什么 I have q taste of the cake,It's good 和并为一句话 The cake is very delicious.May I have a( ) one,Mom?按首字母提示完成句子 I have a request for the cake.for起什么作用? I -------the dictionary for 2 years.have been和 have had为什么选have had I would have gone to the concert if I___enough timeA had hadB have hadC had D would have had