28.I didn’t enjoy the party very much. I knew ______ nobody there.
24. ---Michael is one of the top students in our class . --- ___ , he cheated in the last exam .
23. She is excited to read a note ___ the present from her grandfather .
22. Miss Alice didn’t respond ___ my question in public , ___ made me angry with her .
21. --- Why don’t you like your job ? --- It’s always being ___by my director .
20. The rest of his life was devoted ___ pollution ___more happily .