know

We didn't know his telephone number, otherwise we ______ him

I don't know how to deal _______ such matter.

Don’t____ to let me know if there is anything I can do for you.

I didn’t know the word; I had to ______ a dictionary.

You don’t know about the difficulty I had ______ the work then at all.

Susan wants to know whether the measures have been agreed _____

I don't know the park, but it's _____________ to be quite beautiful.

—We never know _____the old man is.—They say he is a teacher.

---Do you know Jim quarreled with his brother this morning?     --I don’t know, ______.

─Do you know the woman over there?─Yes, She's_______ aunt?