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ot/can’tcouldn’t/could not . He could dance. We couldn’t /could not sing English songs. Could Millie swim?Yes, she could./No, she couldn’t. Step 3. We have know how to use both ‘can’ and ‘could’ now. Let’s finish the work on the book. And then let’s check it out. Step 4. Do and check out the review paper. Assignments: 1. Finish the preview paper. 2. Review what have been learned.