. He (clean) his room yesterday. 2. He (clean) his room every day. 3. He (clean) his room tomorrow. 4. The girls (dance) at the concert last week. 5. The girls (dance) at the concert next week. 6. The girls often (dance) at the concert 7. I ( not see) my friends next summer. 8. I ( not see) my friends last summer. 9. I ( not see) my friends every day. 10. You usually ( read) books in the