With the help of high technology, more and more new substances ______ in the past years.

   A. discovered                  B. have discovered

C. had been discovered         D. have been discovered

 --- How was the televised debate last night?

   --- Super! Rarely ______ so much media attention.

   A. a debate attracted                           B. did a debate attract

   C. a debate did attract                         D. attracted a debate

 The little boy came riding full speed down the motorway on his bicycle. ______ it was!

   A. What a dangerous scene      B. What dangerous a scene

   C. How a dangerous scene       D. How dangerous the scene

 Pop music is such an important part of society ______ it has even influenced our language.

   A. as         B. that          C. which         D. where

 After a knock at the door, the child heard his mother’s voice ______ him.

   A. calling    B. called        C. being called  D. to call

 There is nothing more I can try ______ you to stay, so I wish you good luck.

   A. being persuaded   B. persuading              C. to be persuaded      D. to persuade

 The Town Hall ______ in the 1800’s was the most distinguished building at that time.

   A. to be completed             B. having been completed

   C. completed                   D. being completed

 His movie won several awards at the film festival, ______ was beyond his wildest dream.

   A. which      B. that          C. where         D. it

 Small sailboats can easily turn over in the water ______ they are not managed carefully.

   A. though     B. before        C. until         D. if

 ______ he referred to in his article was unknown to the general reader.

   A. That       B. What          C. Whether       D. Where