问题

The girl in the photo was smiling sweetly, ________.
A:her long hair flowed in the breeze
B:her long hair was flowing in the breeze
C:her long hair flow in the breeze
D:her long hair flowing in the breeze
B:her long hair was flowing in the breeze
C:her long hair flow in the breeze
D:her long hair flowing in the breeze
正确答案是: