It is our duty to （ ） the specification.
举一反三
- Our duty is ____ hard in the college.
- It' s not our duty to preserve public order. ( )
- It is our duty to assert and safeguard the people’s lawful rights.
- Our ___________ duty is to serve the people heart and soul. A: bound B: binding C: bounden D: binded
- It's our duty to preserve the planet for future（） A: persons B: generations C: characters D: natio