Jack wasn't allowed to go into the sports club ______ he left his membership card at home.

 I don’t think he will make a superstar like Cristiano Ronaldo. He just lacks         it takes to be a professional soccer player. 

Don’t talk such things ___ you don't understand.

Peter was so excited __________ he received an invitation from his friend to visit them.

Evidence has been found through years of study __________ children’s early sleeping problems are likely to continue when they grow up.