The notice says “No Photos!” so reporters must ask _____ before taking photos inside the museum.

The doctor finally gave up the ____ of medicine for full - time writing．

When questioned by the police, Daniels denied all ______ of the events and refused to cooperate.

The government has lost a great deal of   _because of the large increase in food price.

 It’s difficult for college students to have a train seat during holidays, so they are advised to make seat ________ well in advance.