---What are the police doing? ---They are _________the mountain ___________ the escaped prisoner.
You may not agree,but_________I think she is a very good girl.
John is a lazy student,one of_________ bad study habits is to leave for tomorrow_____ ought to be done today.
A new technique_________, the yields as a whole increased by 20 percent.
Take this medicine,_________ you will be getting worse.
The boy was seen_________ in the examination and was punished by the teacher.