17．He is a student at Oxford University,          fur a degree in computer science．

A．studied                B．studying              C．to have studied       D．to be studying

16．－Excuse me sir, where is Room 301?

－Just a minute．I'll have Bob         you to your room．

A．show                   B．shows                  C．to show                  D．showing

15．－Where’s the report?

－I brought it to you           you were in Mr. Black’s office yesterday．

A．if                        B．when                   C．because                  D．before

14．We shouldn’t spend our money testing so many people，most of        are healthy．

A．What                   B．which                  C．what                      D．whom

13．It is worth considering what makes “convenience” foods so popular, and       better ones of your own．

A．introduces            B．to introduce         C．introducing            D．introduced

12．I'm sorry you’ve been waiting so long，but it'll still be some time         Brian gets back．

A．before                 B．since                   C．till                         D．after

11．Feel greatly honored      into their society．

A．to welcome          B．welcoming           C．to be welcomed      D．welcomed

10．－Did the book give the information you needed?

－Yes．But        it，I had to read the entire book．

A．to find                 B．find                     C．to finding               D．finding

9．The companies are working together to create           they hope will be the best means of transport in the 21^st century．

A．which                  B．that                     C．what                       D．who

8．No decision        about any future appointment until all the candidates have been interviewed．

A．will be made        B．is made                C．is being made         D．has been made