158. Some of them may be able to read the code.

159. We're leaving at night, lest there were traffic jams.

160. Costly as it may seem, the solution deserves to be taken into consideration.

161. His dissertation was the worst.

162. The student asked what he should do if he runs out of time.

163. What is the worth of the coin collection?

164. Cleaning the lavatories isn't under my duties.

165. Grease the works, otherwise the clock will break down.

166. Tommy regrets quarrelling with his girlfriend.

167. You were sensible for having apologised for your misbehaviour.

168. There has been a rise in prices of food recently.

169. Only when you listen to my side of the story, will you find out the whole truth.

170. She accused me of having stolen the documents.

172. Despite working day and night, we haven't reached any decision yet.

173. However tired he may be, he never refuses to lend a helping hand in the kitchen.

158.Some of them may be able to read the code.

159.We're leaving at night,lest there were traffic jams.

160.Costly as it may seem, the solution deserves to be taken into consideration.

161.His dissertation was the worst.

162.The student asked what he should have done if he run out of time.

163.What is the worth of the coin collection?

164.Cleaning the lavatories isn't under my duties.

165.Grease the works,or otherwise the clock will break down.

166.Tommy regrets he quarrelled with his girlfriend.

167.You were sensible having apologised for your misbehaviour.

168.There has been a rise in prices of food recently.

169.Only when you listen to my side of the story, you'll find out the whole truth.

170.You ought to have refused to take part in the demonstration.

171.She accused me of having stolen the documents.