问题
选择题
There is a bird in the sky.
A．fly
B． flying
C．flies
D．to fly
答案
答案：B
本题为固定搭配，there be sb/sth doing sth，故选B
搜题请搜索小程序“爱下问搜题”
There is a bird in the sky.
A．fly
B． flying
C．flies
D．to fly
答案：B
本题为固定搭配，there be sb/sth doing sth，故选B
