Combine the sentences to complete the sentences, using the words in the brackets

Ex2: Combine the sentences to complete the sentences,using the words in the brackets
 1, I didn't know her real name. People always called her by her Nick name (BECAUSE)
->.....
 2, They didn't go on a picnic. The weather was cool (Although)
-> .....
3, The room was dark. They turNed off all lights (Although)
->.....
4, I'll never forget the day. I met you then (When