Transform the following complex sentences into simple ones using the gerund. A. Mode 1: I am sorry that I trouble you. - Excuse me for troubling you. 1. I am sorry that I ring you up so late. 2. I am sorry that I turned on the radio when you are working. 3. I am sorry that I came so late. 4. I am sorry that I broke your pencil. 5. I am sorry that I went home without waiting for you. B. Mode 1: I am sorry that I did not tell you about it. - I am sorry for not telling you about it. 1. I am sorry that I did not help you yesterday. 2. I am sorry that I didn't wait for you. 3. I am sorry that I did not do my homework. 4. I am sorry that I did not ring you up. 5. I am sorry that I did not answer your letter. ​