a/an ufo a/an alien好评
a/an ufo a/an alien好评
Ted said he saw UFO and alien that night.A.an,an B.a,a C.an,
an UFO还是 a UFO
为什么是A UFO而不是an UFO?
是an UFO 还是a UFO?
can you imagine keeping an alien dog as a
An alien got out of the UFO为什么用the
unusual前面用a还是an,alien前面用a还是an
单数时UFO前是加a还是an?
ufo前面用a还是an
While Iwas reading a book,an alien came into my room.改为一般疑问句
英语翻译An Alien Language The blockbuster film Avatar has been a