The boy became fatter and fatter each day and made his parents sad.A. which B. what C. he

问题补充：

The boy became fatter and fatter each day and made his parents sad.

A. which

B. what

C. he

D. it

答案：

A. which

B. what

C. he

(答案→)D. it

解析：考查并列句，此题由连词and 连接，前后应是完整的句子，第二个分句缺少主语故用it ,若把连词and去掉，前加上逗号，可选which看成非限制性定语从句，所以选D。