\begin{itemize}
\item The string methods, \method{ljust()}, \method{rjust()}, and
-\method{center()} now take a optional argument for specifying a
+\method{center()} now take an optional argument for specifying a
fill character other than a space.
\item The \method{sort()} method of lists gained three keyword
\item The \function{zip()} built-in function and \function{itertools.izip()}
- now returns an empty list instead of raising a \exception{TypeError}
+ now return an empty list instead of raising a \exception{TypeError}
exception if called with no arguments. This makes the functions more
suitable for use with variable length argument lists: