Look! The ground is wet. It must have rained last night, ________?
Research suggests that fast food and soft drink directly _________ to childhood obesity.
You will _________sooner or later if you keep working like that.
All visitors to this village_________ with kindness.
—Is that phone for personal use? — No. In no case _________to use it in the office for personal affairs.
A good story does not necessarily have to have a happy ending, but the reader must not be left .