Identify the Stages of Group Development with the given descriptions: Significant task progress; structure fully functional and accepted; group energy moved to performing tasks; last stage for permanent groups. [Fill in the blank] A great deal of uncertainty about purpose; leadership questionable; testing the waters. [Fill in the blank] Temporary committees, teams and task forces; group disbands; attention toward wrapping up activities; responses vary from being upbeat to depressed. [Fill in the blank] Close relationships develop; cohesiveness; group structure solidifies; common set of expectations. [Fill in the blank] Power struggles; intragroup conflict; resisting group constraints; conflict over group control; some groups remain in this stage. [Fill in the blank] 多项填空题