A. should have done B. would have done C. must have done D. may have done
单项选择题（）there is a tree on either side of the road.
A. Every few metres B. Every few metre C. Every a few metres D. Every a few metre
单项选择题I am, just as is sung in a song, a（）.I live on my own.
A. someone B. somebody C. anybody D. nobody
