—I’m sorry for losing your pen.—_______I have another one. A. You’re welcome B. That’s right C. It’s nothing
——How was your trip? —— I hope I can go there again.
——What can I do for you? ——
——How are you? ——
——Happy birthday! ——
_______ he is in poor health, ______ he is still busy working all day and all night. A. Although; but B. Although; / C. Although; and