I'm new to overleaf and having trouble with something seemingly quite basic . . . having 'single' quotation marks show up in my document.
I am copy and pasting from Microsoft Word.
(I've look at related posts, but i'm still having trouble)
Here's my MWE:
\documentclass[twocolumn]{article}
\usepackage{graphicx}
\newcommand{\rvec}{\mathrm {\mathbf {r}}}
\usepackage{graphicx}
\usepackage{subfigure}
\usepackage{amsmath}
\usepackage{xcolor}
\usepackage{color, soul}
\usepackage[symbol]{footmisc}
\usepackage{booktabs}
\usepackage{caption}
\usepackage{tabularx}
\begin{document}
'these' don't work
\end{document}
Any suggestions are appreciated!
Thanks
Edit: I tried implementing @Bernard 's code, but didn't have any luck. Here's what I tried:
\documentclass[twocolumn]{article}
\newcommand{\rvec}{\mathrm {\mathbf {r}}}
\usepackage{graphicx}
\usepackage{subfigure}
\usepackage{amsmath}
\usepackage{xcolor}
\usepackage{color, soul}
\usepackage[symbol]{footmisc}
\usepackage{tabularx}
\usepackage{booktabs}
\usepackage{caption}
\usepackage{array}
\usepackage[autostyle]{csquotes}
\newcolumntype{L}{>{\raggedright\arraybackslash}X}
\usepackage[utf8]{inputenc}
\usepackage[british]{babel}
But it is giving me an error message: Any suggestions?

textcomppackage for the macro\textquotesingle. However, do please take the following piece of advice to heart: in fine typography, there's simply no real convincing justification for using "straight" (vertical) single and double quotation marks, other than in listings of computer code... – Mico Apr 24 '18 at 16:57