单选题 Everyone should ____ their dreams regardless of difficulties and setbacks.

单选题 The company tried to ____ its decision to lay off employees by citing financial difficulties.

单选题 True happiness ____ meaningful relationships and personal growth, not money or fame.

单选题 The ancient civilization once flourished but suddenly ____ without a trace, leaving only mysterious ruins.

单选题 The project was ____ a great success, thanks to the team’s joint efforts.

单选题 Many people ____ success as the accumulation of wealth, but others value happiness more.

单选题 The environmentalist has spent years ____ for the protection of endangered species.

单选题 It’s ____ to prepare an emergency kit for natural disasters.

单选题 The ____ cycle of poverty and crime is hard to break without government intervention.