Do you not have anything better to do?

Stop asking me your stupid questions? Do you not have anything better to do? / Хватит задавать мне свои тупые вопросы. Тебе заняться больше нечем?

There's nothing left to eat.

There's nothing left to eat. We have to go to the store to buy some food. / Больше есть нечего. Нам надо сходить в магазин за продуктами.

You need more confidence.

You just need more confidence. Who cares that nobody likes you. / Тебе просто нужно больше уверенности в себе. Кому какое дело, что ты никому не нравишься?

We can't just sit here any longer.

He's not my friend anymore.

I don't want to hear another word.

I can't take this much longer.

No one else will be allowed in.

There's nothing else I can do.

I'm not sure of anyting anymore.