1. It was clever of him to work out the answer
2. It is dangerous of peter to always drive so fast
3. I noticed him crossing the road
4. We were relieved to hear that David had arrived
5. You are mad to have thrown up your job
6. I saw Jimmy get into his car and drive away
7. We are disappointed to not have heard form Molly
8. She is quite easy to be contacted at work
9. All of us felt the house shaking violently 
10. The papers are ready for you to sign now
11. You would be most unwise to lend Tom money
12. Mr. Pinchley makes his teenage children stay at home in the evenings 
13. I am keen on starting my own business
Be keen on Ving
14. Harry’s parents didn’t let him buy a motorbike
Let sb Vnt
15. It’s impossible for us to work in this noise 

`***`The answer`***`

1. It was clever of him to work out the answer : Anh ấy thật thông minh khi tìm ra câu trả lời.
2. It is dangerous of peter to always drive so fast : Thật nguy hiểm cho Peter khi luôn lái xe quá nhanh.
3. I noticed him crossing the road : Tôi nhận thấy anh ấy đang băng qua đường.
4. We were relieved to hear that David had arrived : Chúng tôi rất nhẹ nhõm khi biết rằng David đã đến.
5. You are mad to have thrown up your job : Bạn thật điên khi đã từ bỏ công việc của mình.
6. I saw Jimmy get into his car and drive away : Tôi thấy Jimmy lên xe và lái đi.
7. We are disappointed to not have heard form Molly : Chúng tôi rất thất vọng khi không biết Molly.
8. She is quite easy to be contacted at work : Cô ấy khá dễ được tiếp xúc trong công việc.
9. All of us felt the house shaking violently : Tất cả chúng tôi đều cảm thấy ngôi nhà rung chuyển dữ dội.
10. The papers are ready for you to sign now : Các giấy tờ đã sẵn sàng để bạn ký ngay bây giờ.
11. You would be most unwise to lend Tom money : Bạn sẽ là người không khôn ngoan nhất nếu cho Tom vay tiền.
12. Mr. Pinchley makes his teenage children stay at home in the evenings : Ông Pinchley bắt những đứa con tuổi teen của mình ở nhà vào buổi tối
13. I am keen on starting my own business : Tôi muốn bắt đầu kinh doanh của riêng mình.
14. Harry’s parents didn’t let him buy a motorbike : Bố mẹ của Harry không cho anh ấy mua một chiếc xe máy.
15. It’s impossible for us to work in this noise : Chúng tôi không thể làm việc trong tiếng ồn này.