because

----Why did you argue _____________ your best friend?----Because she laughed at me.

My father _________ me, because he _________ I failed my test

We are interested in the weather because it ______ us so directly – what we wear, what we do, and even how we feel.

By no means　　　　to move to a new place far away from her workplace, because it isn't convenient for her family and herself.

---Why don’t you go home? ---Because the work _______.

I do not intend to follow that, because we shall have an opportunity to do so on another ______.

There is no ___way than sending her a gift to cheer her up because she loves gifts..

They couldn’t get along well with each other because they have nothing _______.

Tom regards Nanjing as  his  second ______because he has been there for over ten years.

The plan finally ____ just because many people in the area were unwilling tocooperate with the government.