this is ____UFO A.a B.an C.the

this is ____UFO A.a B.an C.the 1、Two fishermen said they had ever seen ____UFO.a.the b./c.a选哪一个? This is a love this is a japan This is a this is a This is a book this is a Demo This is a secret This is a story This is a This is a n_____jacket is this a jacket This is a cirde. This is a this is a hat This is a snowmans This is a map____China