Someone who lacks staying power and perseverance is unlikely to ___ a good researcher. 

Though sending text messages or writing micro-blogs allows us to exchange thoughts, bits and pieces of online connection can’t ______ for a “real conversation”.

Although they lost their jobs, saving and unemployment benefits allow the couple to ____ their comfortable home．

The local government decided to ____ the two firms into a big one.

The electricity ____, the light went out.