1. Susan (not/return) from her skiing holiday yet. 2. We (just/move) in. 3. I (not/see) Thomas since 1995. 4. Sue (clean) for the past three hours. 5. Cindy (never/be) to the United States. 6. She (revise) for the exams since Monday. 7. How long (you/work) here? 8. He (make) ten phone calls since this morning. 9. (you/ever/lie) to your best friend? 10. He (lie) on the couch since he got home from work.