Question

45.You already ( drink) ……………...........….. four cups of teas since I (sit) ………………… here.
46.The old man (fall) ……….......………as he (get) ……………..into the bus.
47.What ………... you (do)……...…… between 9:00 and 10:00 yesterday ?
- I (clean) ………............………. my house. I usually clean my house on Saturday morning.
48.Where is Nick ? - He just (go) ….........…………..out
49.That tree makes the house very dark. – Very well, I (cut) ……….......……… it down.
50. What ………......... you (do) …...........……. at this time yesterday ?
51.I’ve decided to repaint this room.- Oh, have you ? What color …....…… you (paint)…..........……… …?
52.Tom (take) …..……….. . a photograph of me while I (not look) ………....……………..
53.I (break) ………....……….. a plate last night. I (do) …....……………. the washing up. 
54.What …… you (do) ………………. when you grow up ? - I (be) ….......……………….. an architect.
55.She’s on holiday. She (go) …...……………… to Italy
56.Tom is looking for his key. He can’t find it anywhere. He (lose) …….......…………… his key.
57.I (not go) …............…………… out because it (rain) …………………. yesterday.

Answer 1

45.You have already drunk four cups of teas since I sat here.
46.The old man fell as he got into the bus.
47.What were you doing between 9:00 and 10:00 yesterday ?
- I was cleaning my house. I usually clean my house on Saturday morning.
48.Where is Nick ? - He has just gone out
49.That tree makes the house very dark. – Very well, I am going to cut it down.
50. What were you doing at this time yesterday ?
51.I’ve decided to repaint this room.- Oh, have you ? What color are you going to paint?
52.Tom was taking a photograph of me while I was not looking.
53.I broke a plate last night. I did the washing up. 
54.What are you going to do when you grow up ? - I am going to be an architect.
55.She’s on holiday. She is going to Italy
56.Tom is looking for his key. He can’t find it anywhere. He has lost his key.
57.I didn't go out out because it rained yesterday.

Answer 2

45.You have already drunk four cups of teas since I sat here.
46.The old man falls as he gets into the bus.
47.What were you doing between 9:00 and 10:00 yesterday ?
- I was cleaning my house. I usually clean my house on Saturday morning.
48.Where is Nick ? - He has just gone out
49.That tree makes the house very dark. – Very well, I cut it down.
50. What were you doing at this time yesterday ?
51.I’ve decided to repaint this room.- Oh, have you ? What color are you going paint?
52.Tom took a photograph of me while I wasn't looking.
53.I broke a plate last night. I was doing the washing up. 
54.What will you do when you grow up ? - I will be an architect.
55.She’s on holiday. She goes to Italy
56.Tom is looking for his key. He can’t find it anywhere. He lost his key.

57.I didn't go out because it rained yesterday.

Answer 3

45) have drunk/ have sat