手机没电了，怎么办？

Shǒujī méi diàn le, zěnme bàn?

My phone is out of battery, what should I do?

钱包丢了，你打算怎么办？

Qiánbāo diū le, nǐ dǎsuàn zěnme bàn?

Your wallet is lost, what are you planning to do?

明天要考试，我还没复习，怎么办呢？

Míngtiān yào kǎoshì, wǒ hái méi fùxí, zěnmebàn ne?

There is an exam tomorrow and I haven’t reviewed yet, what should I do?