许多青少年都会经历一个害羞且缺乏安全感的阶段。

Many teenagers go through a shy and ___insecure phase.

在危机期间，许多人对未来感到非常不安。

During the crisis, many people felt deeply ___insecure about the future.

尽管取得了成功，她对自己的能力仍缺乏信心。

Despite her success, she remained ___insecure about her abilities.