В некоторых предложениях возможны варианты.1. Who has been using (use) my toothbrush? 2. “What (are you/doing)?” “I (am writing) a letter”. 3. Samantha (plays) tennis with friends every weekend. 4. Tim and Matilda (have been)
married since 1991. 5. Uncle Bill (has just/decorated) the bathroom. 6.
Pauline and Tom (sing) in the school choir twice a week. 7. Who
did you speak (are/were you speaking) to? 8. Sarah is very happy. She (has won) a poetry competition.
9. He has drunk (He drank) two cups of coffee this morning. 10. My friend (is living) in
America at the moment. 11. They (usually/change) jobs every five years.
12. I (normally/cut) my hair myself. 13. Linda (has been studying) in the library
for three hours. 14. We (are playing) in a concert next weekend. 15. Who (has been reading)
my diary? 16. Tim (leaves) the house at 7 o’clock every morning. 17.
(Does your mother/work) in a bank? 18. (Do you/drink) coffee with your breakfast
every day? 19. We (are making) plans for our summer holidays right now. 20.
They (are moving) house in September.