21. The new park and ride system will greatly improve traffic in the city.

119. All the passengers were killed in the plane _______.

118. I sat down and wondered if anything else could______.

117. The old couple ______ live next to us have four grandchildren.

116. No sooner had I got home ______ it began to rain.

115. The doctor advised him to give up ___ , but he refused ___so.

114. I have enjoyed my visit very much, and would like to thank all the people ______.

113. I _____ meet him in the street yesterday.

112. She didn’t tell the reason ____ she was absent from the important lecture.

111. You cannot cancel your order ____ you change your mind within three days.

110. Hold the money in your bank account ____ you use it for college courses.