无论我怎么劝说，他都不肯尝试新食物。

No matter how much I urged him, he ___wouldn't try the new food.

昨天无论我怎么努力，电脑就是打不开。

No matter how hard I tried, the computer ___wouldn't turn on yesterday.

如果我是你，就不会在这么晚的时候独自出门。

If I were you, I ___wouldn't go out alone this late.