尽管面临挑战，她保持了开朗的性格。

Despite the challenges, she maintained a cheerful ___disposition.

她甜美的性格使她在朋友中很受欢迎。

Her sweet ___disposition makes her popular among friends.

他冷静的性格帮助他有效处理压力。

His calm ___disposition helps him handle stress effectively.