The police are trying to______who killed the old woman.A．ascertainB．ascribeC．avertD．assert

The police are trying to find out the _______怎么选择

Today, London police officers who ride horses are paid __________.A． the same as

If you are with someone who is bitten by an adder you should ______.A．try to catch the add

The thief tried to break away from the police who ______ him, but failed.A．was holdingB．ha

The City Bank will pa fifty pounds to _____ who helps the police to catchthe man.A:some

The American police were trying to______down the criminal in a small town in Mexico.A．trac