They have been waiting for many hours to see the singer, but the airplane must have been _____.
--Why has he been staying at home these days? --He ___________ since a month ago.
The president of the country was well_________ of when he was in power.
The gas tank____________ twenty gallons of gas, but now it may____________ only three gallons.
Mr. Smith__________ the roll of film as soon as he arrived home
The shop manager always says to his assistants, "We can never be ____customers.