to find somebody/something after searching in several different places. The police have so far failed to _____ ____ the attacker.
track (sb) down
I'm shocked, absolutely ________ (speech)
speechless
He refused to answer on the g______ that the question violated his rights to privacy.
grounds
When they offered me a transfer to Paris, I ______ at the chance
jumped
Religion is the opiate of the ________ (mass) - Karl Marx
masses
All my effort was in _____ (vanity)
vain
I would like to avoid any ___________ (understand)
misunderstanding