thank you so much this is helping me a lot because i am a freshman an the AP book can be a little difficult to understand but thank you so much. You should start uploading again. And other subjects as well like algebra pre-calculus or biology if you know how to but again thank you!!!!!!!!!!!!!!!!!!!!!!
lol, most of my classmates are freshman. haha, I'm a senior this is not challenging to anyone in my class. This class teaches common sense everyone should have.
In China now, there is two child policy, which means that every family can have two children (twins are considered one because they come in the same pregnancy stage) to avoid the overall negative increase rate.
