The first quarrel between a young couple is the beginning of a new stage, ______ poetic love is transformed into practical life.[ ]

Does the young man standing there________ thecompany—No.The company is________ his father.

help you, sir—I’m afraid you can’t I have my students’papers________

Wind poweris an ancient source of energy wemay return in the near future.

You won’t surf the internet before you finish your homework, ______ you?