21-Though we still ................ a long way to go, a lot of ............... in developing now medical procedures to deal with diseased issue.
a-had had/had been accomplished
b-had/has been accomplished
c-have had/was accomplished
d-are having/was being accomplished
e-have/is being accomplished

22-Soon customs officers .................... to use X-ray technology ...................cavities in vehicles for drugs.
a-have been able/having scanned
b-are able/scanned
c-were able/to be scanned
d-will be able/to scan
e-would have been able to/to have scanned

23-As acqusation opportunuties within the EU................. less, western European energy companies .............. to turn eastwards in the hunt for expansion opportunites.
a-grow/are being forced
b-will grow/would have been forced
c-are growing/would be forced
d-have grown/had been forced
e- grew/have been forced

24-İf Britain ................ the euro, say in 2004, the stability pact .................. highly importnt.
a-will be joining/is becoming
b-has joined/will have become
c-will have joined/will become
d-would join/has become
e- were to join/would become

25-Whatever else ............... the British Empire for so long, it was not Britain's education system.
a-was sustained
b-has sustained
c-sustains
d-sustained
e-to have sustained

26-................. despite the claims of his lawyers that his statements had been made under "highly coercive conditions"
a-John Walker refused to reveal the secrets of his life in Afghanistan
b-The Amarican Taliban, John Walker, had been denied bail by the court
c-John Walker, the Amarican Taliban, came froma humble background
d-John Walker was incited by a federal grand jury
e-John Walker played a leading role in Taliban activities

27-Though some scholars argue thet .................... others say that she beginning of the 15th century was its real rise
a-by the late part of the 12th century most of the library conventions of Urdu literature have already been well established
b-the 12th century was the time of the great religious movements in India
c-Urdu literature dates back to the 12th century
d-most of the library writings in India in the 12th century consisted of religious tracts and allegories
e-most Urdu poets in the 12 th century turned to romances and narratives of heroic deeds

28- ............................... to whom they report.
a-A growing body of evidence does indeed suggest that Enron was a case of bad management
b-In theory a company's auditors are appointed independetly by its shareholders
c-The Enron fiasco has shown that all is not well with the governance of many big American companies
d-Harvey Pitt has been appointed the new chairman of the Securities and Exchange Commission in the US
e-IN Congress, politicians are engaged in an investigation of Enron's managers

29-.................. where they ate mosquito larvae and so helped prevent malaria.
a-British engineers regarded these canals as "dond rivers"
b-The people in Bengal still talk of digging canals across the Ganges delta
c-Indeed irrigation gave a uch-needed boost to declining agricultural production
d-The dam prevents all silt from following downstream
e-The floos waters even brought fish into the fields

30-Though coral reefs are among the richest ecosystems on the planet.....................
a-they grow in crystal-clear waters that contain hardly any nutrients
b-nutrient uptake is closely related to the degree of movement in the sea
c-the rough surfaces are what make this possible
d-they are also skilled at rcycling
e-changes in turbulance accurately predicted the rate of nutrient uptake