题目内容：

There _____ a lot of tigers there,but now they are endangered.
A.were used B.used to C.used to be D.used to have
说明原因喔,也要整句翻译吧

优质解答

C
翻译：过去那里有很多老虎,但现在他们濒临没绝.
过去常常用 used to do,there be 句型,所以答案：used to be
不明白的再问哟,请及时采纳,多谢 !