40. When I (see) …………. her, she (cry) …………………. . 41. Since we (meet) ………… her, we (know) ………………….. many interesting things. 42. The doctors (be) …………………… in the operating room since 3 o’clock. They (work) …………………. In there for more than five hours. 43. The little girl (try) ……………….. to walk when she (fall) …………….. down to the ground. 44. The manager (make) ……………. A speech in a meeting at 9 tomorrow morning. 45. They (move) ………….. all furniture out of the house by last night. 46. This is the first time I (know) …………………. such a lazy person. 47. This is the second time I (be) …………… to London. 48. Tommy (not receive) …………………. any more complaints up to now. 49. We (be) ………………very tired after we (write) ……………………four compositions in the same day. 50. We (call) ………………. them three times but still no one has answered the phone.