It is ______ that we can’t finish it on time.

—How is your recent trip to Sichuan?—I've never had ________one before.(2011·四川)

At the back of the old temple __________ twelve huge stone statues together with __________ pagoda.

We all knew from the very _____ that the plan would fail.

Nowedays, there is a____ increase in children’s creativity,for they are greatly encouraged to develop their talents.