He is always clever. I wonder how it_____that he should have failed the simple test this time.

good manners to say “Sorry” when you knock into someone butno need to say it again and again

S. official said North Korea — andIran — should follow in the steps of Libya, which last December said it wouldwork__________ to allow international weapons inspectors to do their work.

Those natives who _________ movefrom place to place with their animals in the past have moved into new housesat last.

idn’t wait for Mr. Smith last night,did you—Yes, but we ________. He didn’t returnhome at all.