I want to buy MBA diploma .句中问号处用冠词an还是a?

I want to buy MBA diploma .句中问号处用冠词an还是a? I want to buy some I want to apply for the MBA in your university.MBA前面是否要加the? I want to buy something ( ) her i want to buy some medicine_______my toothache I want to buy a house _______money. I want to buy( )art book. I want to buy skirt ______my father i want to buy roller skate I want to buy this phone. I want to buy a present______mu cousin I want to buy a hair c____ I want to buy an u-------. I want to buy an access是什么意思 I+want+to+buy+a+postcard. I want to buy a _______of shorts. I want to buy a p____of shose want,ruler,buy,I,a,to