(年北京市西城区高三5月二模试题)21. — You look great!— I ______ out. Check out my muscles!
The teacher asked me _____ I did last Sunday morning?
--- Why does she always ask you for help? --- There is no one else____, is there?
I don’t remember how many years ago ____ I last showed you around the old campus.
Next door to ours ______, who has achieved much in physics.
---It was really very kind of you to give me a lift home. ---Oh, don’t mention it. I _____ past your house anyway.