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

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

42j. Chose the right words: as, because, being, for, why, to complete the following sentences (Tema 54, páginas 309 y 310 de Gramática Inglesa para Estudiantes Españoles)
1. That must be the reason he came
2. married and having young children, he couldn’t go
3. He took no risks he was frightened of his master
4. Officials say it is the two sides have different versions
5. they were rarely in the office together, he found his orders constantly changing