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1. No sooner had he returned from his walk than he got down to writing the letter.
2. Hard as he worked, he failed the examination.
3. As long as you keep calm, you will pass the driving test.
4. He played the song without making any mistakes at all.
5. They had a such fierce dog that nobody dared to enter their house.
6. Neither he nor her brother answered my questions.
7. I wanted my clothes to be ironed by my younger sister last Sunday.