II . Complete the sentences.
1.The boys (to run) about in the garden. 2. I (to do) my homework. 3. John and his friends (to go) to his library. 4. Ann (to sit) at her desk. She (to study) geography. 5. A young man (to stand) at the window. He (to smoke) a cigarette. 6. The old man (to walk) about the room. 7. The dog (to lie) on the floor. 8. You (to have) a break? 9. What language you (to study)? 10. Who (to lie) on the sofa? 11. What they (to talk) about? 12. It still (to rain)?