前方的道路模糊不清，他感到前途未卜。

The path ahead is unclear, and he feels ___uncertain about the future.

他对选择哪所大学感到犹豫不决。

He feels ___uncertain about which university to choose.

明天的天气情况还不确定，可能会下雨。

The weather forecast for tomorrow is still ___uncertain; it might rain.

股市行情最近很不稳定，投资者都很谨慎。

The stock market has been ___uncertain lately, making investors cautious.