（2015•宜賓）Look!Therearesomebirds

問題詳情：

（2015•宜賓）Look! There are some birds _______ in the sky. They are very beautiful.

A、to fly            B、fly           C、flying             D、flown

【回答】

C

知識點：動詞和動詞短語

題型：選擇題