a reward of $1,000 will be given to can provide any clues to the case which has been investigated by the police for nearly half a year.
Mary had promised to give me a ticket for tomorrow. She failed, ______.
The policeman came up to the house, whose door was open, _____ there for a while, and went in.
The boy sat there quietly, ______ eyes were filled with tears.
Look! Here comes my English teacher, ______ a group of students.
---You know Jane?---Yes, it was _____ I surfed the Internet last week.