choose the right word: is or are Where IS the money My sister's ...

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choose the right word: is or areWhere IS the moneyMy sister's hair IS so beautifulI have never heard of it. The information IS very importantARE  the trousers in the wardrobe?the greenhouse IS not big enoughthe sunshine IS so brightthese weathermen ARE looking for television nowthese ARE very rare species of animalsthis IS an endangered species of birdsпроверьте, плиз!