When he the door, he found his keys were nowhere.
She ought to stop working; she has a headache because she _________ too long.
-Not getting that job was a big disappointment. -Don’t worry. Something better will ________.
The man we followed suddenly stopped and looked as if _________ whether he was going in the right direction.
-- How can you ________ that he is from the North.9 -- Simply by his accent.