He saw a bird and raised his bow. A. fly B. flying C. flew D. to be flying
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He saw a ___ bird and raised his bow.
A. fly B. flying
C. flew D. to be flying
试题答案
B
表示正在进行的动作，句意是：正在飞的鸟。此处的 a flying bird ＝ a bird which was flying。