—Do you think it's a good idea to make friends with your students?—__________,I do. I think it's agreat idea.
When a person sneezes,an American or an Englishman would probably say:to him.
—I must say you are a wonderful cook,Mrs.Smith. —_________.I’m glad you enjoyed the meal.
—Hi,Professor Li.What time is it now?Are we late? —_________.
—Let me introduce myself,I’m Albert. —__________.
—Do you mind my taking this seat? —_________.