冠词选择I want an asssiant with __ knowledge of English and experience of office routine,答案上是a,可是knowledge不可数,为什么用a?

冠词选择I want an asssiant with __ knowledge of English and experience of office routine,答案上是a,可是knowledge不可数,为什么用a? I want to buy MBA diploma .句中问号处用冠词an还是a? I WANT AN 选择题 冠词的用法I want an assistant with _ little kowledge of French and _experience of office routine A a,/ B the,/ C the,an D an,/ 作出解释 英语冠词选择一道 在需要冠词的地方填上a,an,或the,不需要处画上/+选择填空 在需要冠词的地方填上a,an,或the,不需要处画上/+选择填空 I want to find an english partner I want to find an American friend I want to be an engineer. I want have an English name速度 I want an ice-cream是什么意思 I want to have an English name. I want to buy an u-------. I want to buy an access是什么意思 同义句改写 I WANT AN EGG 改错I want have an egg. 介词填空 I want to have ______ chicken for dinner.不好意思，是冠词，打错了 I want to buy an English dictionary, but I've ( )my money.would you please lend me some?A.run out B.used up选择哪个,急