How to bold (\textbf) an entire example in gb4e?

Question

I am presenting linguistic examples using gb4e. For one example, I would like to make the entire example bold, either the source utterance or the entire thing (including gloss and free translation). When I compile the code below, the bolded example begins on on the line below the example number. I have many examples like this, and I need to bold one of four options in each one. How can I eliminate the extra line without applying \textbf to each individual word?

\documentclass[11pt,letterpaper]{article}
\usepackage{gb4e}
\begin{document}
\begin{exe}
    \ex \textbf{
        \gll sak=en du xu tat nanen chushma rughd.\\
             we=\textsc{cl} with our father mother hot-spring went\\
        \glt `We went to the hot-springs with our parents.'
                    }
    \ex 
        \gll sak=en du xu tat nanen chushma rughd.\\
             we=\textsc{cl} with our father mother hot-spring went\\
        \glt `We went to the hot-springs with our parents.'
\end{exe}
\end{document}

Answer 1

Change \textbf{...} by {\bfseries ...}.

\documentclass[11pt,letterpaper]{article}
\usepackage{gb4e}
\begin{document}
\begin{exe}
    \ex {\bfseries
        \gll sak=en du xu tat nanen chushma rughd.\\
             we=\textsc{cl} with our father mother hot-spring went\\
        \glt `We went to the hot-springs with our parents.'
           }         
    \ex 
        \gll sak=en du xu tat nanen chushma rughd.\\
             we=\textsc{cl} with our father mother hot-spring went\\
        \glt `We went to the hot-springs with our parents.'
\end{exe}
\end{document}

If you need to combine \textbf with \textsc(necessarily) you should add something like \usepackage{bold-extra} in the preamble. (the result is not very good but it works).