—Jenny, is this ______ bike? —Oh, no, it’s not ______.A. your; mine B. you; my C. yours; my
--- I think I’ve lost my book. --- _____.
Do you find ____ hard to understand real English?
--- Have you ever ____. --- No, never.
These English words are important, please _____.
--- Where is Mary? --- She ____ to Harbin.