Translation of "Manage" in Chinese

I can manage on my own.

- 我能独当一面。
- 我自己办得了。

Will you manage to repair my car?

您能修好我的车吗？

You should be able to manage it.

你应该能解决。

Few governments can manage the economy successfully.

能把經濟管好的政府不多。

How do people manage to sleep on the plane?

人们怎么能在飞机上睡觉？