This English Exercises: Present Continuous Tense interactive also includes:
- Answer Key
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This resource appears to be interactive, but I could not get it to work online. However, it provides practice using modal verbs correctly, and could be printed and copied for use at a desk, or your could project it and discuss with the whole class. Over five exercises, learners fill in the blanks on 37 sentences with the correct present tense modal: am, is, are.