Definition: because Level: A2
由于天晚了，我决定入住酒店。
___As it was getting late, I decided to book into a hotel.
你可以先走，因为你是最年长的。
You can go first ___as you're the oldest.
我需要它，因为我必须归还给图书馆。
I need it ___as I have to return it to the library.
