Question

【题目】Look! There are some birds _______ in the sky. They are very beautiful.
A.to fly
B.fly
C.flying
D.flown

Answer 1

【答案】C
【解析】句意：看！有一些鸟在天空中飞翔。他们都很漂亮。Fly飞；to fly是fly的动词不定式形式； flying是fly的现在分词或动名词形式；flown是fly的过去分词形式。本题选C，现在分词短语作后置定语。