44. David has so many accidents because he's so clumsy.
If David
45. The office may be closed, so Mark won't be able to get in.
If the office
46. You may want a chat, so just give me a ring.
If you
47. The airport was closed, so Sarah wasn't able to fly to Rome.
If the airport
48. I am having a lot of troubles now because I lost my passport last week.
If I
49. .Unless someone has a key, we can't get into the house.
We can only get
50. .We stayed up late last night and we were so tired.
If we had gone to bed early
51. .He wasn't able to answer the questions, so he failed the exam.
If he
52. .You didn't told me about it earlier so I wasn't able to help you.
If
53. .He failed the exam because he lacked only one mark.
If he
54. I couldn't drive to London because I repaired my car too late.
If I
55. .She is ill. She doesn't remember your advice.
If she
56. We will plant more trees. The air will be fresher.
If
57.. We will use fewer cars. We will reduce pollution.
If
58. We will cycle to school every day. We will keep fitter.
If
59. We will use recycled products. We will save money.
If
60. People will throw rubbish into the right bin. They will keep the environment clean.
If
61. We will turn off the tap when brushing the teeth. We will save a lot of water.
If
62. People will travel more by public transport. The harmful gases in big cities
will be reduced.
If
63. We will start at six. We will arrive there before noon.
If
54. The boy eats so may green apples. He will be ill.
If