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- The reason_________ he didn't come was _________ he had to take care of his sick mother.

A. why; that                   B. why; which   

C. which; why                  D. that; for

The reason________ he didn't come was ______he had to take care of his sick mother.

A. why ; that                   B. why ; which   

C. which ; why                  D. that ; for

The reason_________  he didn't come was _________ he had to take care of his sick mother.

A. why ; that                   B. why ; which   

C. which ; why                  D. that ; for

The reason_________  he didn't come was _________ he had to take care of his sick mother.

A. why ; that                   B. why ; which   

C. which ; why                  D. that ; for

The reason_________ he didn't come was _________ he had to take care of his sick mother.

A. why ; that　　　 B. why ; which　 　　 C. which ; why　　　　 D. that ; for