English is a language shared by several diverse cultures，each of——uses it somewhat  differently.

—Do you think the weather will be all right this summer? —No, ____ we are lucky. The newspaper says it’ll be very hot anyway.

______is expected, according to the online survey, is that house prices will not go up any more.

We must live up to _____ have been expected of ourselves. 

The idea of fish being able to produce electricity strong enough to light a lamp is almost unbelievable, _____ several kinds of fish are really able to do this.