Look! There are some birds _______ in the sky. They are very beautiful. A. to fly B. fly C. flying D...
2022-12-31 01:20:28 145次 2015年初中毕业升学考试（四川宜宾卷）英语（解析版） 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
Look! There are some birds _______ in the sky. They are very beautiful.
A. to fly B. fly C. flying D. flown
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