How do you say

We haven’t seen each other for three months and he has changed a lot.

..in Chinese?

我们已经三个月没见了,他变化很大。

wǒ men yǐ jīng sān gè yuè méi jiàn le , tā biàn huà hěn dà 。

How do you say "Li Ming bought a bicycle last month and rides it to work every day, which makes him feel healthy and environmentally friendly." in Chinese?