—What do you think of this matter?  —This is a matter of __________ importance. I think.

The audience were so ______ by his humorous performance that they kept laughing all the time. 

Your story is perfect. I’ve never heard ____ before.

The____________house smells as if it hasn't been lived in for years.

After a thorough search, the rescue team finally brought the mountain climber back, ______.