问题 选择题

Some researchers are finding that daydreaming may be important to ____ mental health. Daydreaming,

they say, is ____ good means of relaxation.

 [      ]

A. the; 不填        

B. 不填; the

C. 不填; 不填

D. 不填; a

答案

答案:D

单项选择题
单项选择题