Giúp mình mấy câu này vs Combine each pair of sentences, using suitable relative pronouns 1.At the party, we met Josh. He was the president of the student council 2.The boy sits next to me in class. I borrowed a book from him. 3.The little girl is smiling brightly. She has just received a Christmas card from her parents. 4.I was awakened ny the sound of laughter. It came from my roommates. 5.The children attended a special movie prsgram. Some famous actors took part in it. Rewrite the following sentences using a present or past participle phrase 1.The book which was written by that English author has become a best- seller. 2.The girl who is standing over there is waiting for the bus. 3. Lorries that come over the bridge have to be careful of the wind. 4.The conference which was planned by non-governmental organizations was about climate change. 5.The problems that were discussed will be important for your exam.