28. While he (make) ……………………. his speech, he suddenly (feel) ………………… faint. But someone (bring) ……………………. him a glass of water and after a few minutes he (be able) ……………. to continue. 29. When I (see) ………….. him he (paint) …………………. a portrait of his wife. 30. I (see) ……………. you yesterday from the bus. Why …………….you (use) ……………… a stick then? 31. The floor was covered with balls of wool. Obviously Mrs. Pitt (knit) ………………………. something. 32. While he (water)…………………… the flowers, it (begin) …………………. to rain. 33. While the teacher (explain)…………………… the lesson, he (talk) …………………..with his friend. 34. While the children (play)………………….. with others, my husband and I (sunbathe)…………………on the beach. 35. At this time last year, I (attend) …………………………… an English course. 36. Jim (stand) …………………………. under the tree when he heard an explosion. 37. While I (study) …………………. in my room, my roommates (have) ………………….. a party in the other room. 38. It was a lovely day. The sun was shining and the birds (sing)…………………….. in the trees. 39. The tourist lost his camera while he (walk) …………………………….. around the city. 40. The lorry (go) ……………………… very fast when it hit our car.