Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks from 31to 35.

In Germany, it's important to be serious in a work situation. They don't mix work and play so you shouldn't make  jokes  (31)  _______  you  do  in  the  UK  and  USA  when  you  first  meet  people.  They  work  in  a  very organized way and prefer to do one thing at a time. They don't like· interruptions or (32)_______ changes of schedule.  Punctuality  is  very  important  so  you  should  arrive  on  time  for  appointments.  At  meeting,  it's important to follow the agenda and not interrupt (33)  _______ speaker. If you give a presentation, you should focus (34)  _______  facts and technical information and the quality of your company's products. You should also prepare well, as they may ask a lot of questions. Colleagues normally use the family names, and title - for example 'Doctor' or 'Professor', so you shouldn't use first names (35)  _______ a person asks you to.

Điền vào ô 34.

A. on

B. to

C. at

D. in