171. Interrupting when someone is speaking is rude. (CUT)

170. The numbers of cars on the roads must be reduced. (DOWN)
 

169. Despite his ungainly air he is remarkably agile.
→Although 

168. The chances are that the whole thing will have been forgotten
by next term.
→In all 

167. The students’ riotous behaviour should have been severely
punished.
→The students deserved

166. I don’t know the first thing about aeronautics.
→I am 

165. The Prime Minister was determined to remain in office.
→The Prime Minister had 

164. Most people regard Dr. Peters as being the best surgeon in his
field. (WIDELY)

163. Don’t wait to be asked if you want a sandwich! (HELP)

Mrs. Pike was so angry that she made a _______ gesture at the driver.

A. rude B. rudeness C. rudely D. rudest