"怎么办"用英文怎么说啊

有很多句子,比方说;
what should i do?
do u have any idea?
how to do?
can u give me some suggestions?
很多很多的，都有怎么办的意思，有的时候英语并不一定完按照汉语的字面来翻译出来！

What can I do?
我该怎么办？
What do I do?
该怎么办呢？
What shall I do?
怎么办呢？
What's to be done?
怎么办？

how can we do?

Then what?

What's to be done?