-Someone’s knocking at the door. Is it your mother?-No, dad. It _____be mom. I saw mom ____in the bedroom just now.
How time flies ! We’re leaving school. I’ll never forget the days _____we have spent together.
—Is Mr. Smith really ill ? —________.He’s in hospital.
—I don’t know if my uncle ______me a new dictionary .— Well , if he _____you one ,I’ll buy one for you .
----Can you tell me _______he will be back ---In a week ?
The house used to ______.