John is very ____    ——if he promises to do something he’ll do it . 

She prefers the sofa made of real leather although it costs more than that made of ______ leather. 

I'm afraid I'm not ___ to help with the show, for I am fully occupied with my own project

 Jack is late again. It is ____ of him to keep others waiting.

 As she is a _____ visitor to our house, we look on her as a part of our family.