1. is, writes, has been writing, has written. 2. have been doing. 3. helps, has been helping, have washed, have dusted, are cooking. 4. is running, has been running. 5. are doing, are working, have been working. 6. is, is, is playing, have been playing. 7. live, I have been living. 8. is working, has worked, здесь должно быть Have you found, I have been looking for it for two hours, but I haven't found it yet - вот как правильно. 10. are playing. Обрати внимание на то, что во многих предложениях нарушен порядок слов. Не знаю, где это было написано, но много где ошибки. Если это из учебника, то позор таким авторам.