下列单词中a字母不发音的是___________
That is ________ interesting work.
---Why did your parents buy a shiny golden silk dress yesterday?---They bought it _____ me. It’s my birthday today!
---I called you yesterday evening, but there was no answer. ----- Oh, I’m sorry. I _____ dinner at a restaurant at that time.
----What a nice bike! How long ____ you ____it? ----- Just two weeks.
There_____ a hospital in my hometown fifty years ago.