Some 200 world-famous physicists recently attended a conference whose purpose not only was to consider the prospects for the next 50 years of research in physics but also assessing the accuracy of the predictions made at the last meeting of this type, which took place 50 years earlier.
(A) not only was to consider the prospects for the next 50 years of research in physics but also assessing the accuracy of the predictions made at the last meeting of this type,
(B) not only was considering the prospects for the next 50 years of research in physics but also assessing the accuracy of the predictions which were made at the last meeting of this type and
(C) was not only considering the prospects for the next 50 years of research in physics but also to assess the accuracy of the predictions made at the last meeting of this type and
(D) was not only to consider the prospects for the next 50 years of research in physics but also to assess the accuracy of the predictions made at the last meeting of this type,
(E) was to consider not only the prospects for the next 50 years of research in physics but also assessing the accuracy of the predictions made at the last meeting of this type,
Answer (D):
(A) not only was to consider the prospects for the next 50 years of research in physics but also assessing the accuracy of the predictions made at the last meeting of this type,
(B) not only was considering the prospects for the next 50 years of research in physics but also assessing the accuracy of the predictions which were made at the last meeting of this type and
(C) was not only considering the prospects for the next 50 years of research in physics but also to assess the accuracy of the predictions made at the last meeting of this type and
(D) was not only to consider the prospects for the next 50 years of research in physics but also to assess the accuracy of the predictions made at the last meeting of this type,
(E) was to consider not only the prospects for the next 50 years of research in physics but also assessing the accuracy of the predictions made at the last meeting of this type,
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