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41. This flower is being cut by Anna.
42. That film hasn't been seen by them.
43. This machine musn't used by him after 5:30 p.m
44. If I had had an umbrella with me, I wouldn't have got wet.
45. If the Earth stops moving, there will not have day and night.
46. If our teacher had come, we wouldn't have canceled the party.
47. Our homework is being done at the moment.
48. If the weather had been fine enough, I would have gone camping.
49. Was French being learned by you at 7 p.m last night?
50. This is the first time we have eaten food like this.