The death of his lovely son in the huge earthquake was a(n) __________ blow and it almost   broke him down.

Everybody’s fingerprints are _______, so the police can easily find the thieves if any is left when they’re stealing.

I think whoever makes      contributions to the company than the others should get      income.

It was early in the morning and the traffic was _________.

Chen Yang has brains．In fact，I doubt whether anyone in the class has       IQ.