Образуйте сложноподчиненые предложения, используя слова when, if, because 1.I knocked at

Образуйте сложноподчиненые предложения, используя слова when, if, because 1.I knocked at the door. Susan opened it 2.Mr.Priestly saw me. He came forward to meet me. 3. We sat near the fire. The evening was cold 4. I was rather tired. I went to bed early. 5. You are not warm enough. Put on the eiderdown