1) Act jointly with others 2) Answer questions fully 3) Collaborate 4) Get together 5) Join forces 6) Not work independently 7) Play ball 8) Share the burden 9) To work together nicely 10) Work 11) Work or act together 12) Work together 13) Work together harmoniously 1) Collaborate 2) Go along 3) Interrelate 4) Playalong 5) Playballwith 6) Talk 
• (v. i.) To act or operate jointly with another or others; to concur in action, effort, or effect.
Co·öp'er·ate intransitive verb [ imperfect & past participle Coöperated ; present participle & verbal noun Coöperating .] [ Latin coöperatus , past participle of coöperari to coöperate; co + operari to work, ...
co-operate, cooperate To work together, act in conjunction (with another person or thing, to an end or purpose, or in some kind of work).
to work or act together or jointly for a common purpose or benefit. · to work or act with another or other persons willingly and agreeably. · to practice economic cooperation.