.When and where to go for the on-salary holiday ___ yet.

A. are not decided  B. have not been decided C. is not being decided  D. has not been decided

.   ---I’d like to buy an expensive camera.

       ---Well, we have several models _______    .

 A. to choose from  B. to choose          C. to be chosen      D. for choice

.    He didn’t know  _______    or stay.

A. to leave                B. if that he should leave          C. if to leave                 D. whether to leave

.  ___________    anything about the accident, he went to work as usual..

A. Not known             B. Known not        C. Knowing not                           D. Not knowing

．There are five pairs______, but I’m at a loss which to buy．

    A．to be chosen    B  to choose from     C . to choose     D  for choosing

.  Four-fifths of the crop ______.

A. are ruined    B. was ruined    C. were ruined    D. have been ruined

.  The committee ______ over the problem among themselves for two hours.

A. has argued    B. has been arguing    C. have argued    D. have been arguing

.Because of the heavy sandstorm, we had to put off the visit until tomorrow to the exhibition of painting _____in the nearby city.

A.to hold                B.held               C. holding             D. being  held

..I was late this morning because my alarm o’clock failed to______.

A.go off               B.go out               C.go away         D.go without

. The film star walked to his car, ______ a crowd of journalists.

A. followed by           B. following by    C. to follow        D. to be followed by