---Are Mr. and Mrs. Black at home? --- No. ________ of them are at work.
His pet dog _______just 100 grams at birth last month.
Don’t worry. His temperature will ______ back to normal(正常)if he takes this medicine.
—How many mistakes did you make in the exam, Lily? —_________.
—How nice the building is! What is it for? —It _________ be a hotel. But I’m not sure.
—When does a lion begin to eat meat? —I’m not sure. Maybe ________ a few months old.