Complete the following text with suitable verbs in the box with their right forms. $\begin{array}{|l|l|l|l|l|} \hline \textbf{waste} & \textbf{call} & \textbf{lie} & \textbf{reduce} & \textbf{be} \\ \hline \end{array}$ The secret of success in life (a) — in the proper use of time. Many of us often forget that every moment (b) — precious. It is not known to us when we shall (c) — away from this world by death. During this limited and uncertain period, we have a lot of things to do. If we (d) — the precious minutes of our life in idleness, we will (e) — the hours of work available to us.