Boris has brains.In fact, I doubt whether anyone in the class has _______ IQ.

The audience waited in________silence while their aged speaker searched among his notes for the figures he could not remember.

.-----Are you ____to be out late tonight? -----No,because it is rather cold outside.

I've heard from a __________ source that many of the workers may lose their jobs because our company is running very badly. 

The news about the flood surprised all______.