Uzupełnij zdania poprawną formą czasowników w nawiasach.
1. I (do) this exercise for over an hour now but I still (not/finish). 2. How long (you/read) this article? 3. How many tests (you/pass) so far this year? 4. She (write) this book since November. However, she (write) only three pages. 5. (they/collect) the money for the charity yet? 6. (you/wait) here long? I hope not. 7. We (study) English all day, we're tired now. 8. He (not/travel) by plane. Have you? 9. How many times (she/be) abroad? 10. Your parents look very tired. How long (they/garden)?