养成一种健康的生活方式是非常困难的.________ very difficult _______ have a healthy lifestyle.

问题描述:

养成一种健康的生活方式是非常困难的.________ very difficult _______ have a healthy lifestyle.

第一个空 it is,第二个 to。

it's, to

__It is______ very difficult ___to____ have a healthy lifestyle.