If we ________ careful, fire can be dangerous.
—What do you think of the car, Jack? — It looks so nice. Besides, it’s not too expensive.
—Since you’ve tried your best, I’d like to give you one more chance. —Thank you so much!
–How are you going, buddy? --______. A little busy, though.
–Mr Li, I found a watch on the playground. -You should try to find out ______.
--_____ the little girl looks! -- That’s true. She can’t find her Teddy Bear.