I have old pen and my brother has________new one.A.a, an B.an, a C.a, a
— When did it happen? — ______ the morning of December 25.
_______ you do, do it well.
——As a member of bus drivers, I am proud of Wu Bin. ——__________. He is a hero in my heart.
——I don’t know ______ watch this is. Do you know? ——It might be Gao Lei’s.
What a nice day! We should go sightseeing ________ watching TV in the hotel.