Miss Lee ___the children an English song when I saw her.A. is teaching B. was teaching C. taught
He listened carefully, but heard ______.
This bag isn't mine. It's ______.
Shanghai is one of ______ in the world.
---When did you ______? --- ______ the morning of November 20th.
I don't like the color of the T-shirt. Would you show me ______ one?