Many people have come to realize that they should go on balanced diet and make room in

问题补充：

Many people have come to realize that they should go on balanced diet and make room in their day for exercise.

A. a; 不填

B. the; a

C. the; the

D. 不填; a

答案：

(答案→)A. a; 不填

B. the; a

C. the; the

D. 不填; a

解析：第一空填不定冠词，因为diet表示“节食”时，为可数名词; 第二空不填冠词，因为room在此指“空间”“空处”，是不可数名词。