Gradually a smile ____ on her face.a、appearing b、appeared c、being_英语解答

Gradually a smile ____ on her face.
a、appearing
b、appeared
c、being appearing
d、is appeared

人气：403 ℃　时间：2020-01-29 00:55:51

解答

b
a 缺少be 动词
c 缺少谓语
d appear不用被动,在这意思也不通