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ut I got home earlier today. I got home earlier today _______ ________.3. Since John has e back, we can begin right away.________ ________ John has arrived, we can begin at once.4. The accident occurred, because the driver lost control of her car. The accident occurred, because the car was ________ ________.5. According to a related study, women have a tendency to live longer than men. According to a related study, women ________ ________ live longer than men.6. Since it is difficult for teenagers to learn English grammar, teachers are patient to explain again and again. Since teenagers have ________ _________ English grammar, teachers are patient to explain again and again.7. I still have no idea how to solve the difficult maths problem.I still have no idea how to _________ ________ the difficult maths problem.8. She works very hard and she is pletely independent of her parents. She works very hard and she never ________ ________ her parents.9. Whenever I saw him, he was chatting with his friends._________ ________ _________ I saw him, he was chatting with his friends.10. He went to bed late in order that he could finish his homework. He ________ _________ in order that he could finish his homework.四、用適當(dāng)?shù)年P(guān)系詞填空1. We’re talking about the piano and the pianist ______ were in the concert we attended last night. 2. He failed in the examination, _______ made his father very angry. 3. The freezing point is the temperature ________ _________ water changes into ice. 4. That tree, __________ branches are almost bare, is very old. 5. Antarctic ______ _______ we know very little is covered with thick ice all the year round. 6. He must be from Africa, __________ can be seen from his skin. 7. Who can think of a situation __________ this idiom can be used? 8. He is a man of great experience, ________ _________ much can be learned. 9. In Australia, surfing is a popular sport among young people ________ they can seek excitement and adventure.10. The reason_________ he gave for his absence is untr