42i. ORACIONES CAUSALES. CLAUSES OF REASON OR CAUSE (Tema 54, páginas 309 y 310 de Gramática Inglesa para Estudiantes Españoles)

42i. Chose the right words: as, because, being, since to complete the following sentences (Tema 54, páginas 309 y 310 de Gramática Inglesa para Estudiantes Españoles)

42i. Chose the right words: as, because, being, since to complete the following sentences (Tema 54, páginas 309 y 310 de Gramática Inglesa para Estudiantes Españoles)
1. I went to bed I was very tired
2. Most of those animals are vulnerable to the cold, they cannot grow long hair
3. It did not suit John, he was accustomed to follow his whims
4. in a position of power, his stupidity does not just affect him