1. Russia’s military (receive) ……………………..…. more than 1,200 new and modernized aircraft over the past 3 years 2. She (write) ………………………… three books since 1999, and she's working on her fourth. 3. In England the sun (not, shine) .............................. every day. 4. The children are in the room now. They (study).......................................... for their exam 5. He (not do) ………………. morning exercises regularly 6. How long he (work) …………………………………………. here? 7. Water (boil) ………………………. at 100 degrees centigrade 8. I (get) …………………….... a special present on my last birthday 9. Mr. Brown (listen) …………………………………. to music when the light went out? 10. He (not be) …………………… at home now. 11. Hanh (not read) …….……………… book at the moment. 12. Kien and Tuyen (be) …………………… good friends since they started high school.