Fill in all the gaps with the correct verb tense, then press "Check" to check your answers. If you need help, you can click on the "Hint" button at the bottom of the screen. Note that you will lose points if you ask for a hint.

1. I (know) Mohammed when he was a child, but I (not, see) him for many years. I (know) Mohammed for more than 20 years.
2. The company and the union finally (agree) on salary raises three days ago. Since then, they (agree) on everything, and the rest of the negotiations have gone smoothly.
3. Mark (take) a trip to Asia last October. He (take) many trips to Asia since he started his own import-export business.
4. Hekmat (play) the violin with the Istanbul Symphony since 1980. Last year, she (play) a Beethoven violin concerto at one of the concerts.
5. When she was in college, Hee Kyung (write) home at least once a week. Now she has a job and is living in Vancouver. In the last six months, she (write) only three letters to her parents.
6. Our university (send) 121 students to study in other countries last year. In total, we (send) 864 students abroad over the last ten years.
7. Mary is a pilot for Air Canada. She (fly) nearly 8 million kilometers during the last 22 years. Last year, she (fly) 380,000 kilometers.
8. Mika missed her physics examination this morning because she (oversleep). She (oversleep) many times since the beginning of hte semester.
9. Alex is an artist. He (draw) many beautiful pictures in his lifetime. Last week, he (draw) a beautiful mountain scene.
10. Jack really needs to get in touch with you. Since this morning, he (call) here four times trying to reach you. He (call) at 9:10, 10:25, and 1:45.