This area experienced. ___ heaviest rainfall in _____month of May.

A. 不填; A.        B. a; the            C. the; the       D.  the ; a

This area experienced.____ heaviest rainfall in _____month of May.  

A. 不填; A.               B. a; the                   C. the; the               D. the; a  

This area experienced. ___ heaviest rainfall in _____month of May.

A. 不填; A.           B. a; the             C. the; the       D.  the ; a 

This area experienced.       heaviest rainfall in            month of May.

A. 不填; A.                B. a; the                      C. the; the                  D. the; a

This area experienced.        heaviest rainfall in            month of May.  

A. 不填; A.                B. a; the                   C. the; the               D.  the ; a