I cannot find specifically in Progress/KwizIQ section a lesson or description of compound tenses but to date all the examples I have seen use Passé Composé, or a couple of examples of Pluperfect as in this lesson. There is an extended review of compound tenses on the Lawless site itself. It would be useful to link to information on all the compound tenses/moods here. Alternatively, at least, include in this and any other compound tense related lessons, a line or two confirming (or otherwise) that the rule discussed is general to all compound tenses and moods.