1. While the teacher was absent, the class was very noisy : Trong khi giáo viên vắng mặt, lớp học rất ồn ào.
2. I am going to have the builder mend my roof tomorrow : Tôi sẽ nhờ người thợ xây sửa lại mái nhà của tôi vào ngày mai.
3 I regret sending you that letter . It was very rude of me : Tôi rất tiếc khi gửi cho bạn bức thư đó. Nó rất thô lỗ với tôi.
4 The letter which she wrote to me said that she never wanted to see me again : Bức thư cô ấy viết cho tôi nói rằng cô ấy không bao giờ muốn gặp tôi nữa.
5. He is such a dull person that people fall asleep while he is talking : Anh ấy là một người buồn tẻ đến nỗi mọi người ngủ gật trong khi anh ấy đang nói chuyện.

1. While the teacher was absent, the class was very noisy. 
2. I am going to have the builder mend my roof tomorrow. 
 - I am going to have my roof mended by the builder tomorrow 
3 I regret sending/ having sent you that letter . It was very rude of me. 
4 The letter which she wrote to me said that she never wanted to see me again. 
5. He is such a dull person that people fall asleep while he is talking.