opportune

你的电话来得正是时候，我刚好需要帮助。

Your call came at an ___opportune time, just when I needed help.

雨来得正是时候，新种的树苗刚开始枯萎就降下了甘霖。

The rain arrived at an ___opportune moment, just as the newly planted saplings began to wilt.

她选择休间隔年真的抓住了最佳时机，恰好赶在公司宣布大规模裁员之前。

She decided to take a gap year at an ___opportune point, right before the company announced mass layoffs.