thanks @naomirabin @andrew @zsofit @robert @robj for your contributions, as Zsofi mentions, many of your activities are the same or very similar, but that’s fine, great minds think alike! All very effective.
@robj mentions the possibility that students might write the correct answer but due to capital letters etc it might be identified as wrong. It is possible to indicate alternative answers by separating them with a slash. The instructions are in the activity, but you need to click the instructions button to show them.