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After two years’ research,we now have a _______ better understanding of the disease.

A.very                         B.far                            C.fairly                        D.quite

After two years’ research, we now have a __________ better understanding of the disease.

A. very   B. far

C. fairly  D. quite

After two years’ research, we now have a ____ better understanding of the disease.

   A. very        B. far          C. fairly       D. quite

After two years’ research, we now have a ________ better understanding of the disease.

A. very      B. far        C. fairly    D. quite

 After two years’ research,we now have a _______ better understanding of the disease.

A.very              B.far               C.fairly                D.quite