--Hi, Tracy, you look tired. --I am tired. I________ the living-room all day.
______ the sound on the step, the boy rushed out to see if his mother had come back.
His answer was _______, so no one could make out what he meant.
_______ you don’t stay out too late, you may go to the party. But remember to be back here no later than 11:30 pm.
Unfortunately, when I dropped in, Dr. Green ______, so we only had time for a few words.
The animal makes a strange sound, slightly ______ the bark of a dog.