E-mail, as well as telephones, ____an important part in daily communication.

I regret not having taken your advice. Otherwise I _____ this mistake. [ ]

ys, many parents are trying to either prevent their children from failure, or protect them from the knowledge ______ they have failed.

Rome was not built in a day. You should set goals and work hard to achieve them. [ ]

Taking exercises is _______to your health.