2Fe+3Cl₂→(t^o)2FeCl₃

FeCl₃+3KOH→Fe(OH)3+3KCl₂

Fe(OH)₃→(t^o)Fe₂O₃+3H₂O

Fe₂O₃+6HCl→2FeCl₃+3H₂O

136. Town criers used to go through city streets, ………………… the latest news.

a. cried            b. said                       c. told                 d. shouted 

137. They walked around the town, …………………a bell.

a. ringing             b. horning             c. shouting           d. blowing

138. When you are sending messages directly from your computer to another, you are sending …………………  

a. letter               b. email                 c.  passages            d. lists

139. Mary rarely go out on Sunday, …………………?

a. doesn’t she          b. does she           c. does Mary          d. doesn't Mary

140. There is something wrong with the new car, …………………?

a. is it                 b. isn’t it             c. isn't there             d. is there  

141. That is a true story, …………………?

a. isn’t it             b. isn't that           c. is it               d. is that

142. Does she spend a lot of time………………… her homework?

a. in               b. of               c. on               d. at

143. Fruit juices and milk are healthful drink, …………………?

a. are they        b. aren’t they       c. aren’t fruit juices          d. aren’t drinks

144. Would you like me………………… down the radio a bit?

a. turn              b.turning            c. to turn             d. have turned

My house _________in 1986.

A. is built

B. was building

C. was built

D. has been built