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1. Who is that lady who IS STANDING in the doorway?
2. DONʹT you SEE the kettle IS BOILING?
3. I can SEE somebody who IS GOING along the street?
4. Your sister IS GOING to the exhibition next Saturday.
5. My parents HAVE BEEN to many countries.
6. Jane is the prettiest girl IʹVE ever SEEN.
7. How many times HAVE you BEEN in love?
8. How long HAS Prof. Baker BEEN TEACHING at the university?
9. IʹVE BEEN STUDYING for three straight hours. No wonder Iʹm getting tired.
10. Jim HAS BEEN LIVING here since 1997.
11. Bob is talking on the phone. He HAS BEEN TALKING since he came home.
12. Hi, Susan. Welcome to the party. HAVE you ever MET my sister?
13. Mary HASNʹT REACHED her brother on the phone yet.
14. While Mom WAS READING the little boy a story, he fell asleep.
15. The telephone RANG when you WERE HAVING a shower.
16. It WAS SNOWING the whole afternoon.
17. When I first entered the classroom, students WERE TALKING to each other in different languages.
18. Einstein DEVELOPED the theory of relativity.
19. She FELT a little better after she TOOK the medicine.
20. Jim didnʹt tell me that he HAD RECEIVED a telegram from Olga.
21. Tomorrow he WILL TAKE a bus to go to school.
22. Jane WILL BE fifteen next year.
23. IʹLL BEGIN studying at six. If you come at seven, IʹLL still HAVE BEEN STUDYING.
24. Donʹt worry! By the time you come back, weʹLL HAVE BEEN TEACHING for 20 years.
25. At midnight tomorrow IʹLL BE SLEEPING.
26. Next weekend IʹM VISITING my relatives in the country.
27. After I watched TV, I WROTE a letter to my cousin.
28. I will be studying until I GET tired.
29. John WILL BE here for at least a year until he FINDS a job.
30. They WONʹT START eating until their mother ARRIVES.
31. Our plane LEAVES at 5 oʹclock.