There is _____“U”in the word “unhealthy”（用“a”还是“an”）

There is _____“U”in the word “unhealthy”（用“a”还是“an”）

There is _____ sheep on the mountain Hurry up ,there is _____ time leave. There is _____bread in the cupboard , _____? Tim is in Australia.How long _____ there? There is a name for _____ Chinese year. There is no _____ what will happen.咋填？选择题 It is said that in Australia there is more land than the government knows _____. There is _____ milk in the glass.It is ______ sour. There is --I was surprised to see wild flowers in Alaska. --Many people think there is nothing there _____..