The room is in a terrible mess; it ______ cleaned.

    A. can’t have been                B. couldn’t be              C. mustn’t be                      D. mustn’t have been

 New technologies ______ in the building of the plane.

       A. had been used                  B. have used                 C. have be used             D. were used

 Scientists wanted to find out whether these new technologies ______.

       A. would be worked             B. will work                  C. will be worked          D. would work

 This kind of computer ______ well both at home and abroad.

       A. sold                              B. are sold                    C. sells                         D. sell

 Hundreds of jobs ______ if the factory closes.

       A. lose                                B. are lost                     C. will lose                   D. will be lost

 While shopping, people sometimes can’t help ______ into buying something they don’t really need.

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

 Is this book worth ______ a second time?

       A. to read                           B. being read                 C. to be read                 D. reading

 Does Peter know any other foreign language ______ Russian?

       A. except                             B. besides                     C. but                          D. beside

 She really doesn’t know______ he got her money stolen in the street.

       A. that it was when                                                       B. when it was that       

       C. when was it that                                                     D. when that it was

 The teacher told the students _______ so much noise.

A. not make                         B. not making               C. not to make                     D. don’t make