Sentence examples for Know how difficult from inspiring English sources

You know how difficult the Arc is".

We know how difficult the Arc is.

And I know how difficult it is.

'I know how difficult it is.

Do you know how difficult walking is?

"I know how difficult it is," General Fang said.

"I know how difficult it was for my mother".

"I don't know how difficult that will be," she said.

"I know how difficult their lives are," she said.

"I know how difficult this must be for them.

Yes, I know how difficult this can be.