There __________ a big tree in front of my house . I could hear many birds sing in it ._刷题宝

题干

There __________ a big tree in front of my house . I could hear many birds sing in it .

A：used to be

B：is used to be

C：used to have

D：was used to be

上一题下一题 0.0难度选择题更新时间:2019-01-19 12:18:23

答案(点此获取答案解析）

A

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