Please do me a favor —_____ my friend Mr. Smith to Youth Theater at 7:30 tonight.
As is often pointed out, knowledge is a two-edged weapon which can be used ________ for good or evil.
Urban crowdedness would be greatly relieved if fares ________ on public transport were more reasonable.
Every time Ashtita tries to break a record, he reaches a point ______ he feels he cannot physically do any more.
The boy talked his mother ________ buying him a home computer.
Remember to ________ a good state of mind even if you should fail plenty of times.