Free tool to create C-tests online. There is also a downloadable program but it may be easier to create them online and then use save as. To embed in Moodle I call up the page and then click on 'View source'. I then copy the source and add it to a Moodle page.
Curriki, the online education community, is building the first website to offer free, open-source instructional materials for K-12. We have thousands of free worksheets, lesson plans, exams, project ideas and activities for English language arts, math, science, social studies, technology integration and other subjects. All of our educational material is contributed by teachers and partners and is free and open source.