I will not be able to work so hard

He worked very hard but could not succeed

Doctors will not be able to save him

Can you climb the tree?

Can you climb the tree?

You can come to my house* whenever you want (*in my humble abode)

The human being can get everything through hard work

You can take this book tomorrow

Can I bring you something?

Where can you get more money?

We can say on the one hand that ...

It was difficult to recognize her

I couldn't work because I was sick