他在独自踏入那片陌生的森林前犹豫了。

He hesitated before ___venturing into the unfamiliar forest alone.

她犹豫了很久才决定冒险尝试独自旅行。

She hesitated for a long time before ___venturing to try traveling alone.

她犹豫了一下才冒险提出这个大胆的建议。

She hesitated before ___venturing the bold suggestion.