---The light was on all night long. ---Yes. It seemed that Mike ________. He was the last one to leave the office.
He must have had an accident, or he ____ here for class then .
Put yourself in situations where you will be forced to communicate in English, ____ you will see more progress over time.
Thousands of people ____ the company stores to leave flowers, notes, even apples with a bite in the past two weeks.
Education is a lifelong process, ____ starting long before the start of schooling.
—Shall we go out for a walk? —I'm afraid not.We can't go out ___ our work is being done.