That was so serious a matter that I had no choice but _____ the police.
______ the distance was too long and the time was short, we decided to fly there instead.
—What’s the matter with you, Tom? —______ the ladder, one of arms has been broken.
______ the illness pneumonia, Jackson couldn’t go on teaching.
It’s already 9:00 and Lucy is ______ for us there.
—Hi, Li Ming. Where are you going? —Oh, it’s you—Xiaohui. I ______ you.