In the dark street, there wasn't a single person __________ she could turn for help.
I like exercise such as _____ sports.
I can’t hear you _____, would you please speak it more slowly?
Yesterday my parents and I went to Tianyi Square, and we enjoyed _____ around there.
----- Your English is very good, who taught you? ----- Nobody. I taught _____.
_____ he is ill, _____ he still goes to work.