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I would like to study together with my friends, because.....

Since early 1990s hundreds of homeless people … have crowded the Metro.
Выберите один ответ: will have crowded
have crowded
crowded
has crowded

числе опускается ,определенный артикль сохраняется)

the star, a mountain, a tree, a waiter, the queen, a man, the woman, an eye , a shelf, a box, the city, the boy,a goose, a watch,a mouse, a dress, a toy, a sheep, a tooth, a child, an ox, a deer, the life, a tomato