By no means true that all native speakers of English know their own language very well．

Li was beaten in the contest, ______ had beenexpected.

Mike lost his key. ______ couldn’t enter the room.

Our country is_______ 56 nations and_______ of them can be tom away from the motherland.

Does it rain a lot in this area? — , it hardly ever rains; the climate is like that of a desert