Never before in the history of this country has anyone seen
Never before in the history of this country has anyone seen
The last few years has seen great changes in this country对吗
I've never seen this kind of butterfly before.
Never before has this city in greater need of modern public
Never before has this city been in greater need of modern pu
________the people in this city have seen the ufo before
as never before in their long history
Never before in history has a city been so completely destro
She has never been to the country before,_________?A.has she
I′ve never seen such a good film before.(同义句) This is the (
I've never seen anyone quite like you before.No,I've never m
they have never been held before in this country 为什么用been 不用