John is weak. He should eat a balanced diet to _____

试题详情及答案解析

John is weak. He should eat a balanced diet to ______.

A．keep health	B．stay health
C．keep healthy	D．keep in healthy

答案：C

试题分析：句意：约翰身体太弱了。他应该平衡饮食来保持健康。keep/stay healthy="be" in good health,结合句意，故选C
考点：考查形容词的用法。