North Korea threatens to ________ from six-party talks aimed at ending North Korea's nuclear program unless its proper rights are to be satisfied.
—Would you like _______ , sir?—No, thanks. I have had much.
Our manager goes to work ___.
—When shall we start?—Let's _____ the time for the trip. What about 8:30? Is that all right?
I’m so busy today that I can’t __________ the house.
I met my old friend ____________ on my way home from school.